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Biology Question Answers Practice Test

Medical Entrance Biology Question Answers Practice Test.

This Medical UG Entrance Biology MCQ Questions Answers for all India and state level medical entrance Biology exams: This mock test having 500 questions, with four choices. On each click on Biology answers system will tell you where the answers is correct or incorrect. You can view this Medical UG Entrance test question details at the end of the quiz.

This set of Biology Questions Answers are applicable for any kind of Medical UG Entrance 2016. You can practice as much as you can to gather knowledge of how to answers Biology Objective Paper and this can be a big factor for cracking Medical Entrance exam like AIPMT, AIIMS.



Biology Question Answers - Medical Entrance

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Question 1
Agranal chioroplast are found in:        
A
Bryophytes
B
Gymnospenns
C
Green algae
D
Angiosperms
Question 2
What will be the gametic chromosome number of a cell, if somatic cell have 40 chromosomes?          
A
10
B
20
C
30
D
40
Question 3
The gene interaction when one gene masks the effect:        
A
complementary gene action
B
supplementary gene action
C
duplicate gene action
D
epistasis
Question 4
Corpus luteum secretes        
A
progesterone and estrogen
B
LH
C
only progesterone
D
progesterone and LH
Question 5
Soil erosion is prevented by:        
A
deforestation
B
afforestation
C
reduction of CFCs production
D
use of CNG in all transports
Question 6
In which phylum larva/young one is bilaterally symmetrical but adult one is radially symmetrical?          
A
Echinodermata
B
Porifera
C
Arthropoda
D
Mollusca
Question 7
Bilaterally symmetrical but acoelomate animal is:          
A
liver fluke
B
jelly fish
C
round worms
D
crab
Question 8
Sporangia bearing leaves in pteridophytes are called:              
A
ramenta
B
son
C
sporophylls
D
indusium
Question 9
Lateral root or ginates from:        
A
endodermis
B
pericycle
C
cortex
D
phloem
Question 10
The number of chromosomes in Klinefelter’s syndrome is:            
A
47(44÷XXY)
B
47 (44 + XXX)
C
47 [46 + 1 (chromosome 21)]
D
none of the above
Question 11
Confusion technique involves the use of:              
A
juvenile hormone
B
pheromones
C
ecdysone
D
hormones
Question 12
Sal and teak is the dominant species in which of the following forests?            
A
Tropical dry deciduous forests
B
Temperate deciduous forests
C
Temperate rain forests
D
None of the above
Question 13
Ultimate source of variation is:          
A
mutation
B
mitosis
C
meiosis
D
fertilization
Question 14
Secondary host of Schistosoma is:        
A
Hydra
B
Euglena
C
Snail
D
Pheretima
Question 15
Universal blood recipient is:        
A
blood group-O
B
blood group-AB
C
blood group-A
D
blood group-B
Question 16
To maintain constant body temperature is called:              
A
homeothermic
B
poikilothermic
C
homozygous
D
heterozygous
Question 17
Histamine is secreted by:        
A
goblet cell
B
nerve cell
C
Kupffer cell
D
mast cell
Question 18
Inclusive fitness theory is proposed by:          
A
Darwin
B
Lamarck
C
Weismann
D
Hamilton
Question 19
Hesperidium of orange is a modification of:        
A
berry
B
drupe
C
pome
D
aggregate fruit
Question 20
Removal of amino group of ammo acid to transform it into keto acid is          
A
transamination
B
ammonification
C
deamination
D
none of the above
Question 21
In eukaryotes basic structural unit made of histone and DNA:              
A
nucleosome
B
nucleolus
C
chromosome
D
lysosome
Question 22
Aqueduct of sylvius (iter) connects:      
A
1st and 2nd ventricles
B
3rd and 4th ventricles
C
2nd and 3rd ventricles
D
4th and 1st ventricles
Question 23
Which of the following is not secreted by anterior pituitary?          
A
Prolactin
B
FSH
C
Growth hormone
D
ADH
Question 24
Oblique ovary is found in family:        
A
Brassicaceae
B
Compositae
C
Leguminosae
D
Solanaceae
Question 25
Ontogeny repeats phylogeny is a part of:        
A
Recapitulation theory
B
Darwin’s evolution theory
C
Lamarck’s evolution theory
D
Weismann’s theory
Question 26
Potato is native to:          
A
South America
B
North America
C
South East
D
Australia
Question 27
Who coined the term ‘cell?          
A
Purkinje
B
Robert Brown
C
Robert Hooke
D
Hugo von MohI
Question 28
Sieve tubes differ from sieve cells because they:      
A
have pores mainly on its walls
B
are shorter
C
lack nuclei
D
are dead
Question 29
Vital capacity of lung is            
A
TV+IRV+ERV
B
TV+IRV+RV
C
TV+ERV
D
IRV+ERV
Question 30
Allergens are;      
A
infectious and increased secretion of IgE
B
non-infectious and increased secretions of lgF
C
injections and increased secretion of lgG
D
non-infectious and increased secretion of 1gM
Question 31
Human population growth is:            
A
lag
B
stationary
C
exponential
D
none of these
Question 32
Stop codons are:              
A
AUG, GUG
B
UAA, UGA, UAG
C
UAC, UGG
D
AGU, AGA, UAC
Question 33
Which of the following is a component of electron transport chain in mitochondria ?      
A
Phytochrome
B
Cytochrome oxidase
C
Plastocyanin
D
Carotenoids
Question 34
Cyanobacteria are:        
A
mosses which attack bacteria
B
bacteria which attack Cyanophyceae
C
autotrophic organism with phycocyanin
D
none of these
Question 35
Interferons are produced in response to:          
A
virus
B
bacteria
C
helminthes
D
malarial parasites
Question 36
In which of the following stage chromosomes are arranged at equatorial plate?          
A
Anaphase
B
Metaphase
C
Prophase
D
Telophase
Question 37
Fertilization of sperm and ova takes place in              
A
ampulla of oviduct
B
isthmus of oviduct
C
fimbrae of oviduct
D
none of the above
Question 38
Which is a unit of evolution?          
A
Cell
B
Individual
C
Population
D
Species
Question 39
Fungi lack:        
A
mitochondria
B
ribosomes
C
chloroplast
D
endoplasmic reticulum
Question 40
Eutrophication is seen in:        
A
saline soil
B
agricultural land near thermal plant
C
lake
D
mountain
Question 41
Which one of the following element is essential for the life of animal and not for plants?          
A
Calcium
B
Iodine
C
Phosphorus
D
Potassium
Question 42
1:2:1 phenotypic and genotypic ratio is found in:        
A
complementary genes
B
blending inheritance
C
multiple alleles
D
pseudo alleles
Question 43
Which of the following pair is correct?      
A
Bats wing and insect wing are analogous
B
Seal flippers and bats paw are homologous
C
Insect wing and bird wing are homologous
D
Thorn of Bougainvillea and tendril of pea are analogous
Question 44
Pyruvic acid is the end product of:            
A
Krebs cycle
B
electron transport system
C
photosynthesis
D
glycolysis
Question 45
The back bone of RNA consists of which of the following sugar?          
A
Deoxyribose
B
Ribose
C
Sucrose
D
Maltose
Question 46
Mycorrhiza is found in          
A
oligotrophic soil
B
eutrophic soil
C
both (a) and (b)
D
none of the above
Question 47
Damaged sieve tubes are sealed by deposition of:              
A
pectin
B
callus
C
suberin
D
lignin
Question 48
A codon is made up of:        
A
single nucleotide
B
two nucleotides
C
three nucleotides
D
four nucleotides
Question 49
O2evolution is directly associated with:        
A
PS-I
B
PS-Il
C
phytochrome
D
phycocyanin
Question 50
2n - 2 is known as:        
A
monosomic
B
trisomic
C
nullisomy
D
polyploidy
Question 51
Which is not a feature of annelids?        
A
Metameric segmentation
B
Nephridia
C
Pseudocoelom
D
Clitellum
Question 52
Enzyme found functional in lysosome is          
A
acid phosphatase
B
basic phosphatase
C
oxido reductase
D
liases \
Question 53
Luscuta is a          
A
parasitic plant
B
symbiotic plant
C
predator
D
decomposer
Question 54
Pick out the odd one:          
A
Aniielida
B
Reptilia
C
lnsecta
D
Taenia
Question 55
The AIDS test is known as:        
A
ELISA
B
Australian antigen
C
HIV test
D
None of these
Question 56
Phylogenetic system was given by          
A
Engler and Prantl
B
Pliny
C
John Ray
D
R.H. Whittaker
Question 57
Geotropic response is perceived by:          
A
root tip
B
root hairs
C
elongating cells
D
mature root cells
Question 58
Which of the following law was discovered first by Mendel?        
A
Law of dominance
B
Law of segregation
C
Law of independent assortment
D
Law of sex determination
Question 59
Who gave theory about embryonic evolution?          
A
Darwin
B
Lamarck
C
Haeckel
D
Dabzansky
Question 60
The correct sequence of men inges of brain from outside to inside is        
A
duramater —> b arachnoid —> piamater
B
arachnoid —> k duramater —> pia mater
C
piamater —> duramater —> arachnoid
D
duramater —> piamater —> arachnoid
Question 61
Fluid mosaic model was proposed by:        
A
Singer and Nicholson
B
Robertson
C
Danielli and Davson
D
Huxley
Question 62
Biogeochemical cycle of which element has atmospheric phase:        
A
carbon
B
sodium
C
phosphorus
D
magnesium
Question 63
The edible part of litchi is:        
A
aril
B
endocarp
C
mesocarp
D
none of these
Question 64
The heartbeat of which animal is myogenic in nature?          
A
Cockroach
B
Leech
C
Elephant
D
All of the above
Question 65
Two places in India show maximum biological diversity. One of them is Western ghat another is:        
A
Eastern ghat
B
Coastal region
C
North-East India
D
Foot hills of Garhwal region
Question 66
Adaptive radiation is for      
A
dissimilar character for adoption from common ancestor
B
similar characters for adoption from common ancestor
C
dissimilar character for adoption from different ancestor
D
similar characters for adoption from different ancestor
Question 67
Who proposed the natural system of classification ?          
A
Carolus Linnaeus
B
John Hutchinson
C
Bentham and Hooker
D
Oswald Tippo
Question 68
Statoliths are involved in:        
A
phototropism
B
hydrotropism
C
chemotropism
D
gravitropism
Question 69
Mushroom belongs to:        
A
Ascomycetes
B
Basidiomycetes
C
Phycomycetes
D
Zygomycetes
Question 70
The largest variety of digestive enzymes is found in:              
A
carnivores
B
herbivores
C
omnivores
D
parasites
Question 71
Codes of rn-RN A and proteins are:        
A
coplanar
B
colinear
C
nonlinear
D
irregular
Question 72
Which one caused mutation in animals?      
A
Change in habit
B
Change in Golgi body
C
Change in gene structure
D
Change in peroxysome
Question 73
Ethylene is used for:      
A
decrease the senescence
B
increase the height of stem
C
ripening of fruits
D
prevention of leaf fall
Question 74
A cell active in protein synthesis will rich in:        
A
ribosome
B
Golgi bodies
C
mitochondria
D
lysosome
Question 75
Plants require sulphur for:        
A
DNA replication
B
protein synthesis
C
synthesis of glucose
D
formation of ATP
Question 76
Chronical disturbance in hormone secretion of thyroid gland causes:      
A
goitre
B
diabetes
C
Addison’s disease
D
colourblindness
Question 77
Nodes of Ranvier are found in:        
A
non-myelinated nerve fibres
B
myelinated nerve fibres
C
both (a) and (b)
D
none of the above
Question 78
Cells having secretory function have abundant:        
A
lysosomes
B
endoplasmic reticulum
C
dictyosomes
D
osteosomes
Question 79
Cystoliths are composed of:        
A
glucosides
B
calcium oxa late
C
calcium carbonate
D
magnesium oxalate
Question 80
Fossils are studied for:      
A
tracing evolutionary history of organisms
B
studying extinct organisms
C
providing jobs to scientist
D
both (a) and (b)
Question 81
Binary fission is a mode of: ?      
A
micropropagation
B
vegetative propagation
C
macropropagation
D
sexual reproduction
Question 82
A nonsense mutation results into:        
A
stoppage of transcription
B
change in protein structure
C
stoppage of protein synthesis
D
termination of polypeptide chain
Question 83
Resolving power of scanning electron microscope is          
A
0.001 nm
B
0.01 nm
C
20 nm
D
0.0001
Question 84
Which of the following are viral and mosquito borne disease?        
A
Filariasis and typhus
B
Kala azar and diphtheria
C
Malaria and chagas disease
D
Yellow fever and dengue
Question 85
Mycorrhiza is useful association because:        
A
it fixes atmospheric nitrogen
B
it enhances absorption of nutrients from soil
C
it kills pathogens
D
it provides resistance against drought
Question 86
Haematuria means.          
A
RBC in the urine
B
WBC in the urine
C
both (a) and (b)
D
none of the above
Question 87
One gene-one enzyme theory was proposed by:          
A
Temin and Baltimore
B
Watson and Crick
C
Robert and Koch
D
Beadle and Tatum
Question 88
Zygospore is        
A
give rise to zoospores on meiosis
B
equivalent to Ascus, Brasilia
C
dormant stage
D
give raise to asexual spore
Question 89
Decarboxylation is not involved in:      
A
electron transport system
B
C4 cycle
C
Krebs cycle
D
alcoholic fermentation
Question 90
Cancer of prostate gland is caused due to the exposure to:              
A
lead oxide
B
cadmium oxide
C
potassium oxide
D
chlorine
Question 91
Synaptic vesicle is found in        
A
pre synaptic neuron
B
post synaptic neuron
C
synaptic cleft.
D
none of the above
Question 92
Eggs of cockroach are:          
A
alecithal
B
microledthal
C
telolecithal
D
centrolecithal
Question 93
The habitat of a species along with its function is:        
A
home range
B
tersitory
C
boundary
D
niche
Question 94
Beadle and Tatum performed classics experiment of Neurospora crassa to explain:        
A
one gene produce one enzyme
B
one enzyme can correct one gene
C
both (a) and (b)
D
none of the above
Question 95
Which is not phagocytic?              
A
Monocyte
B
Lymphocyte
C
Mast-cell
D
Neutrophil
Question 96
Electron microscope was discovered by:          
A
M. Knoll and E Ruska
B
Robertson
C
Robert Hooke
D
Lehmann
Question 97
Scorpion belongs to a class to which one of the following also belong?          
A
Ticks
B
Crabs
C
Branicles
D
Cockroaches
Question 98
Tasmanian wolf is a marsupial while wolf is a placental mammal. This shows:        
A
convergent evolution
B
divergent evolution
C
parallism
D
inheritance of acquired characters
Question 99
Primary blood cells are formed in:        
A
plasma
B
bone marrow
C
liver
D
spleen
Question 100
3-PGA is first stable product ill        
A
carbon-reduction cycle
B
OAA
C
malic acid
D
PEP
Question 101
Myxoedema is a disorder of:            
A
parathyroid gland
B
adrenal gland
C
pituitary gland
D
thyroid gland
Question 102
Activity of succinic dehydrogenase involves the following in TCA cycle:          
A
NAD
B
FAD
C
GDP
D
ATP
Question 103
Osphradium ofPlia globosa is:          
A
photoreceptor
B
thermoreceptor
C
chemoreceptor
D
tangoreceptor
Question 104
In a double stranded DNA, the sequences of base pairs in one strand are AGCTAAGCC. What’s the complementary sequence on the other strand?          
A
TCGATTCGG
B
CGUAUUCG
C
AGCTAAGC
D
CAUTAUCG
Question 105
Number of linkage group in Pisum sativum is:        
A
2
B
5
C
7
D
9
Question 106
Phytotron is:      
A
a controlled condition chamber for tissue culture
B
leaf culture process
C
special culture of plants
D
root culture process
Question 107
From which of the following plants a medicine for respiratory disorders is obtained ?          
A
Ephedra
B
Eucalyptus
C
Cannabis
D
Saccharum
Question 108
Which of the following is a living fossil?          
A
Sphenodon
B
Heloderma
C
Rabbit
D
Frog
Question 109
Weed killers generally have properties much like that of:        
A
hormone
B
carbohydrate
C
enzymes
D
all of these
Question 110
Acetylcholine helps in:        
A
synaptic transmission
B
membrane permeability
C
synaptic delay
D
none of the above
Question 111
Which of the following animals is mostly used in genetics experiments?          
A
Butterfly
B
Fruitfly
C
Housefly
D
Dragonfly
Question 112
Which of the following is vestigial organ in human?              
A
coccyx
B
splint bone
C
wings
D
pelvic girdle
Question 113
Enzyme present in saliva is:          
A
maltase
B
ptyalin
C
sucrase
D
invertase
Question 114
Following technique uses radioactive precursors for observing metabolic activities of macromolecules, is:        
A
chromatography
B
density gradient centrifugation or cell fractionation
C
autoradiography
D
electron microscope
Question 115
Superiority of hybrid over parents is:          
A
introduction
B
selection
C
hybridized progeny
D
hybrid vigour
Question 116
Retroviruses have:      
A
only RNA as genetic material
B
only DNA as genetic material
C
DNA and RNA as genetic material
D
genes on nucleoprotein material
Question 117
Pigment present in cyanobacteria is:        
A
r-phycocyanin
B
r-phycoerythrin
C
c-phycocyanin
D
anthocyanin
Question 118
Protein in silk thread is:          
A
fibroin
B
keratin
C
albumin
D
globulin
Question 119
Tendons and ligaments are specialized types of:            
A
nervous tissue
B
muscular tissue
C
epithelial tissue
D
fibrous connective tissue
Question 120
Hypothyroidism causes              
A
myxodema
B
cretinism
C
both (a) and (b)
D
exopthalmic goiter
Question 121
Enzymes of electron transport system are present in:        
A
inner mitochondrial membrane
B
matrix
C
intermembranous space
D
endoplasmic reticulum
Question 122
In recent year’s which disease of digestive system in India has received great attention and against that active vaccination is being done even in schools?      
A
Poliomyelitis
B
Hepatitis
C
Jaundice
D
Enterocolit is
Question 123
During normal respiration without any effort the volume of air inspired or expired is called          
A
tidal volume
B
reserve volume
C
residual volume
D
noneof these
Question 124
Which of the following statements about blood transfusion is correct. Blood group B can give blood to?        
A
Blood groups B, AB and receive from group B
B
Blood group B and receive from group AB
C
Blood group 0 and receive from group B
D
Blood group B, AB and receive from group AB”
Question 125
Nuclear endosperm has:      
A
every nuclear division followed by wall formation
B
initially free-nuclear divisions followed by wall formation
C
first division followed by wall formation and other free nuclear
D
none of the above
Question 126
Lactic acid is formed in          
A
fermentation
B
glycolysis
C
HMP pathways
D
none of these
Question 127
During meiosis, crossing over occurs between:      
A
sister chromatids of homologous chromosome
B
non-sister chromatids of homologous chromosome
C
sister chromatids of non-homologous chromosome
D
non-homologous chromatids of homologous chromosome
Question 128
In which the pneumatophores are found?          
A
Tinospora
B
Pinus
C
Rhizophora
D
None of these
Question 129
Sinus venosus is present in:      
A
birds only
B
birds and mammals
C
reptiles and birds
D
fishes, amphibians and reptiles
Question 130
Which of the following is not derived from ectoderm?          
A
Inner ear
B
Middle ear
C
Optic nerve
D
Skin
Question 131
Which one is a sex linked disease?        
A
Colourblindness
B
Haemophilia
C
Syphilis
D
Both (a) and (b)
Question 132
Rajaji national park is in:        
A
Karnataka
B
Rajasthan
C
UttarPradesh
D
Assam
Question 133
Heterozygosity is most favoured in plants following:                
A
cleistogamy
B
autogamy
C
xenogamy
D
geitonogamy
Question 134
If the foetus is Rh and mother is Rh then:      
A
foetus will transmit antigen to mother blood
B
foetus will transmit antibody to mother blood
C
foetus is attacked by antibodies to mother blood
D
foetus is attacked by antigen to mother blood
Question 135
The taste receptors of cockroach are:        
A
compounds eyes
B
companiform sensillae
C
palps of maxillary and labium
D
tactile hairs
Question 136
500 mL of 0.1 mol HCI has pH              
A
1
B
13
C
2
D
0.1
Question 137
Suspension of isolated thylakoids in culture medium containing CO2 and H20 does produce hexose due to absence of which of the following?          
A
ATP
B
Enzyme
C
Proteins
D
Hill reagent
Question 138
Cranial nerves numbering IV, V and VI are respectively:      
A
trochlear, trigeminal, abducens
B
trochlear, trigeminal, facial
C
auditory, facial, trochlear
D
auditory, trochlear, facial
Question 139
Claviceps is a member of:          
A
Ascomycetes
B
Basidiomycetes
C
Zygomycetes
D
Phycomycetes
Question 140
Nissl’s granules are absent in:        
A
axon
B
cyton
C
dendrone
D
both (a) and (b)
Question 141
Maximum photosynthetic activity takes place in:        
A
red light
B
orange light
C
green light
D
yellow light
Question 142
Fungi differ from other kingdom in being:        
A
unicellular
B
unicellular, consumers
C
multicellular, decomposers
D
multicellular, consumer
Question 143
Cow dung is appropriately used as:              
A
fuel
B
building material
C
medicine
D
manure
Question 144
Field capacity is associated with:      
A
capillary, hygroscopic, water vapour combined
B
capillary only
C
gravitational only
D
gravitational as well as
Question 145
Amoebaisa/an:          
A
unicellular animal
B
octacellular animal
C
multicellular animal
D
all of the above
Question 146
Pseudocoelom is not found in:          
A
Ascaris
B
Ancylostoma
C
Fasdola
D
None of these
Question 147
When a person is exposed to cold surrounding, which of the following does not occur?          
A
Secretion of adrenal medulla and thyroid increase
B
Shivering occurs
C
Vasoconstricdon in skin vessels supplying blood to hairs
D
Heart beat and volume of blood per stoke increase
Question 148
Niacin deficiency leads to:        
A
pellagra
B
osteomalacia
C
marasmus
D
scurvy
Question 149
Which of the following is a viral disease?          
A
Typhoid
B
Polio
C
T.B.
D
Leprosy
Question 150
 Which is not true about prokaryotes?        
A
DNA is complexed with histones
B
Well developed nucleus absent
C
Mesosome present
D
Mitochondria absent
Question 151
Glenoid cavity is found in          
A
pelvic girdle
B
pectoral girdle
C
sternum
D
humerus
Question 152
Opium is extracted from:      
A
Atropa belladona
B
Papaver somniferum
C
Vinca rosea
D
Azadirachta indica
Question 153
Which of the following passage way is part of cloaca of vertebrates?            
A
Rectum
B
The reproductive tract
C
The urinary tract
D
All of the above
Question 154
Polytene chromosomes are found in:              
A
salivary gland
B
oocytes
C
green glands
D
none of these
Question 155
Ratio of progency when a red coloured heterozygote is crossed with a white coloured plant in which red colour is dominant to white colour:          
A
3:1
B
1:1
C
1:2:1
D
9:3:3:1
Question 156
Integumentary nephridia are also called:      
A
enteronephric
B
exonephric
C
sometimes enteronephric and sometimes exonephric
D
both (a) and (b)
Question 157
In submerged hydrophytes entry of CO2 is through:            
A
epidermis as dissolved CO2
B
epidermis as carbonates only
C
epidermis as bicarbonates only
D
both (b) and (c)
Question 158
Ducts of Bellini are present in:          
A
medulla oblongata
B
liver
C
kidney
D
intestine
Question 159
Organs that have different embryonic origin but perform similar functions are        
A
homologous organs
B
analogous organs
C
vestigial organs
D
atavism
Question 160
Chromosomes can be seen best during:        
A
prophase
B
metaphase
C
anaphase
D
telophase
Question 161
The phenotypic ratio obtained in quantitative inheritance of a dihybrid cross is      
A
1:2:1
B
1:4:6:4: 1
C
1:6:15:20:15:6:1
D
9 : 3 : 3: 1
Question 162
Which is a symbiont inside human intestine?        
A
Streptococcus pneumoniae
B
Neisseria meningitidis
C
E. coil
D
Treponema pallidum
Question 163
How much amount of air can be inspired or expired during normal breathing?          
A
0.5
B
2.5
C
1.5
D
5.5
Question 164
Which of the following statement about Lamarck is true?      
A
He was a French botanist who late become Zoologists
B
He was an English naturalist who gave theory of evolution
C
He was a polish scientist and gave law of inheritance
D
He was a French scientist who gave inheritance by acquired characters
Question 165
Philosophic zoologique written by:          
A
Darwin
B
Linnaeus
C
Lamarck
D
Theophrastus
Question 166
Ontogeny recapitulates phylogeny. This is:      
A
Pauling law
B
Hardy Weinberg law
C
Biogenetic law
D
Thomas law
Question 167
Sertoli cells help in:      
A
maturation of eggs
B
matu ration of sperms
C
enzyme production
D
ovulation
Question 168
Lactose is composed of following compunents:            
A
glucose + fructose
B
gluco’e + glucose
C
glucose + fructose + galactose
D
glucose + galactose
Question 169
Animals devoid of respiratory, excretory and circulatory organs are belong to phylum:        
A
Echinodermata
B
Platyhelminthes
C
RBCs of man
D
salivary gland of mosquito
Question 170
Which of the following hormones are secreted by a pancreas?        
A
lnsulin and glucagon
B
Epinephrin and nor-epinephrin
C
Thyroxine and melanin
D
Lactocin and oxytocin
Question 171
Biosphere reserves are different from National Park as:            
A
plants and animals are protected in biosphere reserves
B
humans are integral part of biosphere reserves
C
humans are not involved in biosphere reserves
D
none of the above
Question 172
The process by which there is inhibition of aerobic respiration by atmospheric °2 is        
A
Pasteur’s effect
B
Calvin’s effect
C
Darwin’s effect
D
None of the above
Question 173
Natural pearl belongs to:        
A
Arthropoda
B
Protozoa
C
Mollusca
D
Echinodermata
Question 174
National Botanical Institute is situated at          
A
Lucknow
B
Kolkotta
C
Mumbai
D
Chennai
Question 175
Which have no specific organ for respiration but respire?            
A
Rabbit
B
Cockroach
C
Earthworm
D
Frog
Question 176
Species living in a restricted geographical areais:              
A
sympatric
B
allopatric
C
sibling
D
keystone
Question 177
Gibberellin was first reported from:        
A
algae
B
fungus
C
bacteria
D
bryophyte
Question 178
The instrument by which B.P. of man is determined:      
A
sphygmomanometer
B
B.P. meter
C
altrasound
D
stethoscope
Question 179
Which one of the following organdIes lack membranes?          
A
Ribosome
B
Mitochondria
C
Golgi complex
D
Nucleus
Question 180
Procambium forms:      
A
cork cam bium
B
vascular tissue
C
vascular cambium
D
intercalary meristem
Question 181
Prolonged deficiency of thiamine in human diet may lead to:          
A
pellagra
B
ben-ben
C
anaemia
D
haemorrhage
Question 182
The function of polymerase chain reaction (PCR) is              
A
translation
B
transduction
C
DNA amplification
D
none of the above
Question 183
Water bloom’ is generally caused by:          
A
green algae
B
blue-green algae
C
bacteria
D
Hydrilla
Question 184
Which of the following enzyme is used in DNA multiplication ?            
A
RNA pplym erase
B
DNA endonuclease
C
Exonuc lease
D
DNA polymerase
Question 185
Ginseng is an important drug of:          
A
America
B
Egypt
C
lndia
D
China
Question 186
Which is a bioinsecticide?        
A
Cactoblastis cactorum
B
Anabaena
C
Bacillus thruingiensis
D
Rhizobium
Question 187
Theory of Pangenesis was proposed by:          
A
Lamarck
B
Weismann
C
Hugo de Vries
D
Darwin
Question 188
The maintenance of internal favourable conditions, by a self regulated mechanism causing changes in environment is:          
A
homeostasis
B
steady state
C
cyclosis
D
ecosystem
Question 189
In a certain plant red colour flower (R) is dominant over white colour flower (r). When heterozygous Rr plant is crossed 64 offsprings are obtained. The number of white offsprings are:        
A
64
B
0
C
16
D
32
Question 190
Osmotic pressure of a solution is:      
A
greater than pure solvent
B
less than pure solvent
C
equal to pure solvent
D
less than or greater than pure solvent
Question 191
Stratification is seen in          
A
Tundra
B
Tropical forest
C
Temperate forest
D
Desert
Question 192
Smallest flower is:        
A
Woiffia microspermia
B
Salvinia
C
Pistfa
D
Lemna
Question 193
The wall of bacteria consists of:      
A
N-acetyl glucosamine
B
N-acetyl muramic acid
C
both (a) and (b)
D
cellulose
Question 194
Maximum diversity is found in which phylum?        
A
Chordata
B
Arthropoda
C
Protozoa
D
Annelida
Question 195
Which of the following organism is useful in degrading organic pollutants:          
A
Nitrosomonas
B
Chiamydomonas
C
Actinomycetes
D
Pseudomonas
Question 196
AzoIla is used as biofertilizers because it:      
A
has Rhizobium
B
is fast growing and can form humus
C
has cyano bacteria
D
has mycorrhiza
Question 197
Bacterial mutants requiring special nutrients are known as:          
A
prototrophs
B
autotrophs
C
heterotrophs
D
auxotrophs
Question 198
Which of the following are the characteristics of deuterosome?        
A
Spiral cleavage, blastopore becoming anus
B
Spiral cleavage, blastopore becoming mouth
C
Radial cleavage, blastopore becoming anus
D
Radial cleavage, blastopore becoming mouth
Question 199
Which of the following connects glycolysis to Krebs cycle?        
A
Acetyl Co-A
B
Ribozyme
C
Cytochrome oxidase
D
N-acetyl glucosa mine
Question 200
Rr rr progeny: Red (dominant) flowered heterozygous crossed with white flower        
A
350 —> red : 350 —> white
B
450 —> red : 250 white
C
380 —> red : 320 white
D
None of the above
Question 201
Red list in India completed by        
A
botanical survey of India
B
zoological survey of India
C
geological survey of India
D
none of the above
Question 202
In ecotone some species become abundant:              
A
sibling species
B
endemic species
C
rare species
D
edge species
Question 203
Metamorphosis in frog is hastened by:              
A
thyroxine
B
insulin
C
glucagon
D
adrenalin
Question 204
Cilia of gills of bivalve molluscs help in:          
A
feeding
B
digestion
C
reproduction
D
excretion
Question 205
Juicy part of litchi is an outgrowth of:            
A
nucellus
B
micropyle end
C
chalazal end
D
outer integument
Question 206
Which is an electron carrier common to both photosynthesis and respiration?          
A
Cytochrome
B
Phytochrome
C
Pheophytin
D
Plastocyanin
Question 207
Which gland atrophies in adult?          
A
Pituitary
B
Thymus
C
Thyroid
D
Adrenal
Question 208
Testosterone is secreted by        
A
Leydig cell
B
Sertolicell
C
spermatogenic cell
D
all of the above
Question 209
Five kingdom classification includes:        
A
Monera, Protista, Fungi, Plantae, Animalia
B
Algae, Fungi, Bryophyta, Pteridophyta, Gymnosperms
C
Virus, Prokaryota, Fungi, Plantae, Animalia
D
Monera, Protista, Animalia, Plantae, Algae
Question 210
The transcription unit is            
A
TATA box to start point
B
TATA box to stop codon
C
Start point to stop codon
D
35 sequence to start point
Question 211
ACTH is secreted by:        
A
thyroid gland
B
thymus gland
C
pituitary gland
D
isletsof Langerhans
Question 212
Funaria and Marchantia differ from each other because Funaria posses:              
A
ventral canal cell
B
foot
C
calyptra
D
protonema
Question 213
Pat storing granules are          
A
elaloplast
B
amyloplast
C
aleuroplast
D
none of these
Question 214
Predation and parasitism are which type of rnteractions:              
A
(+,+)
B
(+,O)
C
(-,-)
D
(+,-)
Question 215
Energy released by carbohydrate, fats, protein is              
A
4.1, 9.45, 5.65
B
4.1, 5.65, 9.40
C
5.4, 6.5, 8.9
D
5.0, 7.8, 10.5
Question 216
During lneiosis crossing over occur between which part of homologous chromosome?      
A
Sister chromatids
B
Nonsister chromatids
C
Genes
D
Alleles
Question 217
Secondary metabolite is:          
A
sugar
B
glucose
C
antibiotics
D
all of these
Question 218
Sex chromosomes for the first time was discovered in which plant?          
A
Sphaerocarpus
B
Pisum sativum
C
Nurospora
D
Lathyrus odoratus
Question 219
Primitive man was originated during:        
A
Miocene
B
Holocene
C
Pleistocene
D
Pliocene
Question 220
Maturation of sperm before penetration is called:              
A
spermatogenesis
B
spermiogenesis
C
capacitation
D
spermatid
Question 221
In osmosis, there is movement of:        
A
solute only
B
solvent only
C
both (a) and (b)
D
neither solute nor solvent
Question 222
Single membrane bound organelles are:        
A
lysosome
B
sphaerosome
C
glyoxysome
D
all of these
Question 223
Vit. B12 is available to ruminants by:            
A
plants
B
microorganisms in caecum
C
animals
D
all of the above
Question 224
Nerve cells are the part of:        
A
epithelial tissue
B
connective tissue
C
muscles tissue
D
nervous tissue
Question 225
Sea horse belongs to:        
A
Mammals
B
Amphibia
C
Ayes
D
Pisces
Question 226
 Leaf colour in Mirabilis jalapa is an example of:            
A
non-Mendelian inheritance
B
Mendelian inheritance
C
chemical inheritance
D
both (b) and (c)
Question 227
Theory of pangenesis was proposed by:          
A
F. Redi
B
Darwin
C
Haeckel
D
Miller
Question 228
The Wolffian duct gives rise to:          
A
scrotum
B
labia major
C
both (a) and (b)
D
epididymis
Question 229
Which of the following is a monocarpic plant?          
A
Bambusa
B
Sesamum
C
Lauandual
D
Pin us
Question 230
Wood ofCycos is:        
A
pycnoxylic only
B
polyxylic only
C
manoxylic and diploxylic
D
none of the above
Question 231
Hassal’s bodies/corpuscles:          
A
adrenal medula
B
thyroid
C
thymus
D
parathyroid
Question 232
CFCs are not recommended to be used in refrigerators because they:      
A
increase temperature
B
deplete ozone
C
affect environment
D
affect human body
Question 233
The pH of blood is:          
A
between 7-8
B
between 2-4
C
between 12-14
D
between 2-5
Question 234
Unwinding of DNA is done by:            
A
primase
B
exonuclease
C
helicase
D
ligase
Question 235
Veliger larva is found in the phylum:        
A
Mollusca
B
Echinodermata
C
Arthropoda
D
Cnidaria
Question 236
In monocot stem, following is absent:          
A
endodermis
B
hypodermis
C
cortex
D
both (a) and (b)
Question 237
 Phytotoxins are secreted by plants in response to fungal reaction. These compounds ax generally:              
A
proteins
B
glycoproteins
C
phenolic compounds
D
lipids
Question 238
One gene one enzyme hypothesis was given by:          
A
Jacob and Monod
B
McClintock
C
Meselson and Stahl
D
Beadle and Tatum
Question 239
In vegetative propagation of the tubers which of the following remain constant through generations?      
A
Morphology, vigour and disease resistance
B
Morphology only
C
Vigour only
D
Vigour and morphology only
Question 240
Juvenile hormone is secreted by:            
A
thyroid gland
B
thymus gland
C
adrenal gland
D
corpora allata
Question 241
Protein packaging is done by:        
A
Golgi apparatus
B
ribosomes
C
end oplasmic reticulum
D
nucleolus
Question 242
Which of the following is balancing organ?          
A
Organ of Corti
B
Cochlea
C
Vestibular region
D
All of these
Question 243
Which of the phylum has none of fresh water form?        
A
Echinodermata
B
Mollusca
C
Chordata
D
Porifera
Question 244
Weed killers generally have properties much like that of:        
A
hormone
B
carbohydrate
C
enzymes
D
all of these
Question 245
The physiological capacity to produce off springs is called                
A
birth rate
B
biotic potential
C
crude natality
D
mortality
Question 246
In which of the following, oxygen does not evolve during photosynthesis?            
A
Photosynthetic red algae
B
Photosynthetic green algae
C
Photosynthetic blue-green algae
D
Photosynthetic bacteria
Question 247
Organisms found in extreme temperature are:              
A
cyanobacteria
B
archaebacteria
C
fungi
D
eubacteria
Question 248
DNAstrands:            
A
have quartenary structure like protein
B
are bonded by disulphide bonds
C
have some polarity
D
are antiparallel
Question 249
Down syndrome is due to:            
A
trisomy of 13th chromosome
B
non disjunction of 21st chromosome
C
trisomy of 18th chromosome
D
fusion of normal sperm with egg having 2X chromosome
Question 250
Which one of the following is a major pollutant of automobile gases?          
A
Carbon monoxides
B
Oxides of nitrogen
C
Oxides of sulphur
D
Carbon dioxide
Question 251
Healing of wound in plants takes place by at activity of:        
A
ground tissue
B
callus deposition
C
secondary meristem
D
permanent tissue
Question 252
Triticum aestivium the common bread wheat is:            
A
triploid with 21 chromosome
B
hexaploid with 42 chromosome
C
tetraploid with 30 chromosome
D
diploid with 14 chromosome
Question 253
Knee joint is:              
A
cartilageneous
B
fibrous
C
gliding joint
D
synovial
Question 254
Food is translocated in plants through:        
A
xylem
B
phloem
C
cambium
D
cork
Question 255
Which of the following is an endangered animal?            
A
Hanuman monkey
B
Langur
C
Antelope
D
Lion tailed maca que
Question 256
Jacket of fern antheridium is composed of:        
A
2 cells
B
3 cells
C
4 cells
D
5 cells
Question 257
Emulsification is the function of:        
A
bile
B
lipases
C
esterases
D
proteases
Question 258
Use and disuse’ theory was proposed by:        
A
Lamarck
B
Darwin
C
Hugo de Vries
D
Maithus
Question 259
Two or more codons coding for one amino acid        
A
non-ambiguous
B
degeneracy of codon
C
non-overlapping of codon
D
non sense codon
Question 260
Marine protozoans lack contractile vacuole because:        
A
osmoregulation is done by cell membrane
B
they are hypoosmotic to their environment
C
they are isotonic with their environment
D
their small body cannot accommodate it
Question 261
Monosomy and trisomy can be represented as:        
A
2n+l,2n+3
B
2,—l,2,z—2
C
2n,2n+1
D
2n —l,2n+l
Question 262
Chlorophyll-a is absent in which of the following photosynthetic or ganism?          
A
Cyanobacteria
B
Red algae
C
Brown algae
D
Bacteria
Question 263
Physiological heterospory is seen in:        
A
Ch!amydomonas
B
Rhizopus
C
Se/a ginella
D
Lycopodium
Question 264
Pseudocoelomic organisms belong to:          
A
Arthropoda
B
Annelida
C
Mollusca
D
Aschelminthes
Question 265
The stem of Equisetum is rough due to:          
A
spines
B
silica
C
sclerids
D
fibres
Question 266
Repressible enzymes are formed:        
A
in the absence of corepressor
B
in the presence of corepressor
C
in the presence of apressor
D
all of the above
Question 267
Maximum productivity is found in:          
A
grassland
B
tropical rain forest
C
ocean
D
none of the above
Question 268
Jumping genes in maize were discovered by:          
A
Hugo de Vries
B
T. H. Morgan
C
Barbara McClintock
D
Mendel
Question 269
The stele found in monocot is:        
A
haplostele
B
atactostele
C
dictyostele
D
actinostele
Question 270
Quinine is obtained from:        
A
bark of Cinchona
B
root of Cinchona
C
wood of Cinchona
D
leaves of Cinchona
Question 271
Penicillin was used in          
A
I world war
B
II world war
C
both (a) and (b)
D
none of these
Question 272
The study of reptiles is called:          
A
Herpetology
B
Dermatology
C
Angiology
D
Parazoology
Question 273
Nissl’s granules are present in:        
A
RBC
B
WBC
C
both (a) and (b)
D
nerve cells
Question 274
Phycomycetes is a class in kingdom              
A
Protista
B
Fungi
C
Plantae
D
Animala
Question 275
The hormone involved in metabolism of food material in cereal grains during germination is:          
A
auxin
B
cytokinin
C
gibberellin
D
none of these
Question 276
Which of the following is a seed borne disease?            
A
Bacterial blight of rice
B
Kharia of paddy
C
Whiptail of Brassica
D
All of the above
Question 277
Formation of glucose from lipids is:        
A
gluconeogenesis
B
glycogenolysis
C
glycogenesis
D
none of these
Question 278
The formation of egg and sperm is affected by:              
A
LH
B
MH
C
TSH
D
FSH
Question 279
Calmodulin is a:      
A
chlorophyll binding protein
B
cadmium binding protein
C
calcium binding protein
D
carotene binding protein
Question 280
Hoolock Gibbon (India’s only ape), is found in:            
A
Kaziranga bird Sanctuary
B
Hazaribagh National Park
C
Corbett National Park
D
Gir National Park
Question 281
In addition to absence of chlorophyll what is the other difference between fungi and higher plants?        
A
Type of nutrition and composition of cell wall
B
Cell type
C
Nucleus
D
Reproduction
Question 282
Deltoid ridge is present in:        
A
femur
B
humerus
C
tibia
D
fibula
Question 283
Humidity in atmosphere decreases rate of:          
A
transpiration
B
photosynthesis
C
glycolysis
D
growth
Question 284
Connecting link between Annelida and Mollusca is        
A
Neopilina
B
Nautilus
C
glochidium larva
D
veliger larva
Question 285
Mouth parts of housefly are:        
A
siphoning type
B
sponging type
C
biting and chewing
D
piercing and sucking
Question 286
Which of the following is called as ‘Age of Reptiles’?              
A
Coenozoic era
B
Azoic era
C
Mesozoic era
D
Precambrian era
Question 287
Highest concentration of auxin is found in:            
A
root and shoot tips
B
leaves and fruits
C
midstem portion
D
none of the above
Question 288
Life span of RBC is:              
A
50 days
B
70 days
C
120 days
D
220 days
Question 289
Competition of species leads to        
A
extinction
B
mutation
C
greater number of niches are formed
D
symbiosis
Question 290
For DNA structure, Nobel prize was given to:              
A
Macna Wilkins
B
Franklin
C
Pauly
D
Waston and Crick
Question 291
Kyoto protocol has specified the commitments of different countries:        
A
to mitigate climate changes
B
limit production of chiorofluorocarbons
C
to prepare a world climatic programme
D
none of the above
Question 292
Maximum noise permissible during day time in residential areas:              
A
75dB
B
55dB
C
65dB
D
45dB
Question 293
Pepsinogen is secreted by          
A
chief cell
B
1 oxyntic cell
C
1 mast cell
D
parietal cell
Question 294
Which lenses in electron microscope are used to control and focus a beam of electron?          
A
Convex lens
B
Concave lens
C
Electric lens
D
Magnetic lens
Question 295
Streptococcus is employed in the manufacturing of:              
A
wine
B
bread
C
cheese
D
all of these
Question 296
Large unit of land having different types of plants and animals              
A
uniform vegetation
B
biome
C
ecosystem
D
niche
Question 297
Which plant hormone promotes seed, bud dormancy and causes stomata I closure?          
A
IAA
B
Abscisic acid
C
GAi
D
Cytokinin
Question 298
Yeast belongs to:        
A
Zygomycetes
B
Basidiomycetes
C
Ascomycetes
D
Phycomycetes
Question 299
At which stage of mitosis chromatids separated and passes to different poles?          
A
Prophase
B
Metaphase
C
Anaphase
D
Telophase
Question 300
Which is correct?      
A
Slime moulds are haploid
B
Protozoan lack cell wall
C
Dinoflagellates are immotile
D
Pellicle is absent in Euglena
Question 301
Which of the following is not a function of liver:        
A
Production of bile
B
Production of insulin
C
Glycogen storage
D
Detoxification
Question 302
Ribosome mainly has:        
A
DNA
B
RNA
C
carbohydrate
D
none of these
Question 303
Heavy metals are detoxified in plants by:              
A
abscisic acid
B
alleopathins
C
phytochelatins
D
phytoalexins
Question 304
Polyembryony is shown by:        
A
Selaginella
B
Pinus
C
Man gifera
D
None of these
Question 305
Enzyme having different molecular arrangement but similar functions, is:          
A
isoenzyme
B
holoenzyme
C
apoenzyme
D
coenzyme
Question 306
During mitosis number of chromosomes gets:      
A
change
B
no change
C
may be change if cell is mature
D
may be change if cell is immature
Question 307
Which of the following first suggest the conservative model of DNA replication?        
A
Cairns
B
Meselson and Stahl
C
Watson and Crick
D
Taylor
Question 308
The movement of pollen tube is called:              
A
chemotropism
B
thermotaxis
C
thermonastic
D
hydrotropism
Question 309
Endoplasmic reticulum is studied with:          
A
ribosomes
B
lysosomes
C
glyoxisomes
D
microsomes
Question 310
Lateral conjugation in Spirogyra occurs between individual which:      
A
are heterothallic
B
are homothallic
C
have different characters
D
are floating
Question 311
Hybrid vigour is due to:      
A
heterosis
B
epistasis
C
complementary genes
D
supplementary genes
Question 312
A person is injected with globulin against hepatitis. This is:        
A
artificially acquired passive immunity
B
artificially acquired active immunity
C
naturally acquired active immunity
D
naturally acquired passive immunity
Question 313
SA node is located in:        
A
lower lateral wall of right atrium
B
upper lateral wall of right atrium
C
upper lateral wall of left atrium
D
lower lateral wall of left atrium
Question 314
Which of the following is not a characteristic of Echinoderm?            
A
Endodermal skeletal system
B
Water vascular system
C
Bilateral symmetry
D
Free floating larval forms
Question 315
Antennary glands of crustaceans are meant for:          
A
excretion
B
respiration
C
digestion
D
circulation
Question 316
Energy enters in a food chain through:        
A
producers
B
primary consumers
C
secondary consumers
D
tertiary consumers
Question 317
If an organism has more rods it will:      
A
active during day
B
possess colour vision
C
active during night
D
both (a) and (c) are possible
Question 318
Apnoea is:      
A
absence of breathing
B
decreased ventilation
C
increased ventilation
D
laboured breathing
Question 319
Gibberellin was first isolated from:              
A
oat coleoptile
B
Actinomycete
C
fungus
D
soybean seedlings
Question 320
Abnormal gene is replaced by normal gene through:            
A
gene therapy
B
medicines
C
cloning
D
radiation
Question 321
Pancreas is absent in which group of vertebrates?              
A
Reptiles
B
Cyclostomates
C
Birds
D
Mammals
Question 322
Cycas circinalis is a source of:          
A
resin
B
timber
C
essential oil
D
starch
Question 323
Which is not used up in human body?        
A
Calcium
B
Phosphorus
C
Zinc
D
Barium
Question 324
Which among the following is the only vertebrate osmoconformer?        
A
Rabbit
B
Hagfish
C
Bird
D
None of these
Question 325
Cytokinin synthesis is maximum in:              
A
leaves
B
roots
C
fruits
D
shoot tip
Question 326
A cell is heterozygous at three gene loci. How many different type of gametes can it form?          
A
2
B
3
C
6
D
8
Question 327
The organism which is used for gene transfer in higher organisms is?        
A
Agrobacterium tumefaciens
B
E.coIi
C
Acetobacter
D
Bacillus thuringiensis
Question 328
Cytokinins are formed in:              
A
roots
B
leaves
C
fruits
D
stems
Question 329
Vernalisation is response due to:      
A
high temperature
B
optimum temperature
C
low temperature
D
none of the above
Question 330
The non-membranous organelles are:          
A
centrioles
B
ribosomes
C
nucleolus
D
all of these
Question 331
Which of the following metal is present in vitamin B12?          
A
Cobalt
B
Copper
C
Zinc
D
Magnesium
Question 332
The purpose of crop rotation is to:        
A
increase the fertility of soil
B
decrease the fertility of soil
C
prevent soil erosin
D
prevent water erosion
Question 333
Part of nephron impermeable to salt:        
A
distal convoluted tubules
B
descending limb of loop of Henie
C
assending limb of loop of Henie
D
collecting duct
Question 334
Which of the following mineral deficiency will cause death of stem and root tips?              
A
)Mo
B
Ca
C
S
D
Fe
Question 335
African sleeping sickness is caused by:              
A
Trypanosoma
B
Leishmania
C
Latimeria
D
Plasmodium
Question 336
DNA synthesis occurs in:          
A
prometaphase
B
prophase
C
interphase
D
telophase
Question 337
Vascular cambium in roots takes its origin from:      
A
pericycle
B
conjunctive parenchyma
C
both (a) and (b)
D
none of the above
Question 338
Action of lysozyme is              
A
physiological
B
anatomical
C
morphological
D
none of these
Question 339
Multiplication of DNA is called:              
A
transcription
B
translation
C
replication
D
transduction
Question 340
Which of the following are required in minimum amount by human?            
A
lron, Iodine, Carbon, Manganese, Copper, 02
B
Iron, Iodine, Manganese, Copper, Zinc, Fluorine
C
Iron, Iodine, Manganese, Zinc, Hydrogen
D
Nitrogen, Oxygen, Zinc, Fluorine
Question 341
Ethylene is involved in:      
A
aerobic respiration
B
anaerobic respiration
C
climacteric respiration
D
fermentation
Question 342
Which of the following is connecting link between reptiles and birds?          
A
Archaeopteryx
B
Euglena
C
Neopilina
D
Latimeria
Question 343
Kupifer cells are present in:        
A
liver
B
pancreas
C
small intestine
D
large intestine
Question 344
The endoskeleton of cell is made up of:        
A
deutoplasm
B
protoplasm
C
endoplasmic reticulum
D
cell wall
Question 345
Na+, K+ dependent ATP ase activity helps in transport of:      
A
K+ inward, Na outward
B
K+ inward only
C
Na+ inward only
D
K+ outward, Na inward
Question 346
Salmon is:        
A
anadromous fish
B
catadromous fish
C
mollusca
D
insect
Question 347
Sub units in prokaryotic ribosomcs are          
A
605-405
B
505-305
C
40S-30S
D
50S-20S
Question 348
National Botanical Research Institute is located at:          
A
New Delhi
B
Mumbai
C
Lucknow
D
Dehradoon
Question 349
Cyanide resistant respiration is characteristic of:          
A
viruses
B
bacteria
C
plants
D
animals
Question 350
Progesterone pill helps in preventias pregnancy by not allowing:          
A
ova formation
B
fertilization
C
implantation
D
none of these
Question 351
Atropa belladona yields medicine used for:        
A
gastric ulcers
B
checking the eyes
C
leprosy
D
constipation
Question 352
Anabaena has an immense potential as a:        
A
biofertilizer
B
food
C
medicines
D
sewage disposal
Question 353
Chemofusion and dectrofusion are characteristic of:        
A
mutations
B
cloning
C
protoplast fusion
D
eugenics
Question 354
The shape of eye lens is changed by:              
A
pupil
B
iris
C
optic nerve
D
ciliary muscles
Question 355
Parasexuality was first discovered in:          
A
bacteria
B
virus
C
fungi
D
none of these
Question 356
Single stranded DNA is found in:        
A
polio viruses
B
rice dwarf virus
C
TMV
D
ct X174
Question 357
Chromosomes that determine male sex in Melandrium plant is:          
A
Y chromosome
B
X chromosome
C
XX chromosome
D
None of the above
Question 358
Alcohol is present in which of the following?          
A
Vitamin D
B
Vitamin 83
C
Vitamin B5
D
Vitamin C
Question 359
Humus is present in:          
A
horizon-A
B
horizon-O
C
horizon-B
D
horizon-C
Question 360
Bacteria do not have:            
A
ribosome
B
protein synthesizing apparatus
C
mitochondria
D
cell wall
Question 361
Herdmania belongs to which subphyla:          
A
Cephalochordata
B
Hemichordata
C
Urochordata
D
Protochordata
Question 362
Starfish belongs to phylum:        
A
Porifera
B
Coelenterata
C
Echinodermata
D
Arthropoda
Question 363
ELISA test is used for detection of:          
A
antibodies
B
viral disease
C
AIDS
D
all of these
Question 364
Hardy-Weinberg principle explains f            
A
genetic equilibrium
B
non-random mating
C
evolutionary force
D
all of the above
Question 365
Phylogenetic system is based on:            
A
evolutionary and genetic character
B
reproductive characters
C
morphological characters
D
natural affinities
Question 366
Raja ii national park is situated in:        
A
Tamil Nadu
B
Karnataka
C
Uttrakhand
D
Rajasthan
Question 367
Which of the following gymnosperm has the presence of vessel?        
A
Pinus
B
Ephedra
C
Cycas
D
None of these
Question 368
Probes used in DNA finger-printing initially:            
A
single stranded RNA
B
mini satellite
C
19 base long oligonucleotide
D
all of the above
Question 369
Overlapping region between two ecosystems:              
A
biome
B
ecotone
C
niche
D
photiczone
Question 370
The largest phylum in respect of number of species is :              
A
Coelenterata
B
Arthropoda
C
Protozoa
D
Porifera
Question 371
Node of Ranvier is found in:        
A
right auricle
B
muscle bundles
C
dendrite
D
axon
Question 372
Ozone hole results in:      
A
UV radiation reaches the earth
B
cataract
C
increase in skin cancer
D
all of the above
Question 373
Theory of catastropism was supported by:              
A
Luis Pasteur
B
A. I. Oparin
C
Cuvier
D
Haldane
Question 374
In Limnaea shell coiling is due to:      
A
cytoplasmic inheritance
B
nuclear inheritance
C
recessive inheritance
D
none of the above
Question 375
In genetic engineering, the terms vector is applied for:        
A
plasmid
B
sources of DNA
C
cell which receives
D
virus
Question 376
Butterfly belongs to:          
A
Homoptera
B
Procoptera
C
Hemiptera
D
Lepidoptera
Question 377
Eggs of egg laying mammals are:        
A
macrolecithal
B
alecithal
C
mesolecithal
D
telolecithal
Question 378
Which was first photosynthetic organism?          
A
Green algae
B
Red algae
C
Cyanobacteria
D
None of these
Question 379
What helps in flowering?        
A
Cytochrome
B
ABA
C
Phytochrome
D
Ethylene
Question 380
To remove seed dormancy by mechanically removing the seed coat, is called        
A
stratification
B
scarification
C
vernalization
D
photoperiodism
Question 381
Cell organe lie responsible for autolysis:            
A
dictyosome
B
lysosome
C
peroxisome
D
glyoxysome
Question 382
In plants translocation occurs in the form of:              
A
starch
B
sucrose
C
glucose
D
fructose
Question 383
Biological species concept emphasizes on:      
A
geographical isolation
B
reproductive isolation
C
physiological isolation
D
none of the above
Question 384
Ribosomes that occur exclusively in mitochondria is:              
A
705
B
555
C
30S
D
SOS
Question 385
Tendons and ligaments are:      
A
epithelial tissue
B
fibrous connective tissue
C
nerve tissue
D
muscular tissue
Question 386
The sequence of ear ossicles from outside to inside is        
A
malleus —> incus —> stapes
B
incus —> stapes —> malleus
C
stapes —> incus —> malleus
D
malleus —> stapes —> incus
Question 387
ICBN is:      
A
International Culture Botanical Nomenclature
B
International Condition Botanical Nomenclature
C
International Code for Botanical Nomenclature
D
International Conversation for Botanical Nomenclature,
Question 388
The conversion of NO3 to N2 is called:              
A
nitrification
B
denitrification
C
ammonification
D
nitrogen fixation
Question 389
Which of the following is used for observing spindle fibres?        
A
Dark Held microscope
B
Phase contrast microscope
C
Polarisation microscope
D
Scanning transmission electron microscope
Question 390
 The presence of recessive part in a large population is found to be 16%. The frequency of dominant allele in that population is:        
A
O.84
B
O.32
C
O.56
D
O.92
Question 391
Mendelian recombinations are due to:      
A
linkage
B
independent assortment of genes
C
mutation
D
dominant characters
Question 392
Cyanobacteria is an:      
A
algae having blue-green pigment
B
algae having red pigment
C
algae having brown pigment
D
algae having yellow-brown pigment
Question 393
Binomial nomenclature was given by:        
A
Aristotle
B
Hutchinson
C
Julian Huxley
D
Linnaeus
Question 394
Excessive accumulation of organic matter in water bodies leads to:            
A
decrease in species diversity
B
increase in species diversity
C
green house effect
D
no effect on species diversity
Question 395
Heterozygous purple flower is crossed with recessive white flower. The progeny has the ratio            
A
all purple
B
all white
C
50% purple, 50% white
D
75%
Question 396
Echolocation is. found in: ?        
A
bat
B
cat
C
dog
D
horse
Question 397
Cotton is:        
A
epidermal tissue system
B
vascular tissue system
C
meristematic tissue system
D
ground tissue-system
Question 398
Which of the following is a nitrogen fixing organism?          
A
BGA
B
Rhizobium
C
Both (a) and (b)
D
Aspergillus
Question 399
The chromosome showing L-shaped structure by the presence of centromere is termed as:              
A
acentric
B
metacentric
C
sub-metacentric
D
telocentric
Question 400
HCI is secreted by:          
A
chief cells
B
mucous cells
C
salivary glands
D
oxyntic cells
Question 401
Vernalization is done at:          
A
lower temperature
B
low light intensity
C
higher temperature
D
high light intensity
Question 402
Menstrual How occurs due to lack of          
A
progesterone
B
FSH
C
oxytocin
D
vasopressin
Question 403
Last stable community in succession which dependent on climate is:          
A
seral community
B
climax community
C
both (a) and (b)
D
none of these
Question 404
Which of the following organism is pseudocoelomate?.        
A
Hookworm
B
Liver fluke
C
Jellyfish
D
Leech
Question 405
Chlorophyll-b is not present in          
A
green algae
B
bryophytes
C
Spiro gyra
D
blue-green algae
Question 406
Which statement is correct?      
A
Osmotic pressure of solution is greater than pure solvent
B
Osmotic pressure of solution is lower than the pure water
C
Osmotic pressure of solution is equal to the pure water
D
None of the above
Question 407
Reindeer moss is a:        
A
pteridophyta
B
bryophyta
C
lichen
D
gymnosperm
Question 408
Which of the following is a basic amino acid?          
A
Leucine
B
Lysine
C
Methionine
D
Aspartic acid
Question 409
Ureotelic organisms:            
A
do not have urease
B
do not excrete urea
C
cannot form uric acid
D
live in water only
Question 410
Fungi in a forest ecosystem is:              
A
producer
B
decom poser
C
top consumer
D
autotroph
Question 411
What is not seen during mitosis in somatic cells?            
A
Spindle fibres
B
Chromosome movement
C
Disappearance of nucleolus
D
Synapsis
Question 412
The supporting and nutritive cells found in the brain are:          
A
ependymal cells
B
microglia
C
astrocytes
D
oligodendrocytes
Question 413
 How many years ago a biogenesis occurred?            
A
3.5 billion years
B
3.0 billion years
C
2.5 billion years
D
3.2 billion years
Question 414
Cytokinins are formed in:          
A
roots
B
leaves
C
fruits
D
stems
Question 415
Which disaccharide has different linkage?              
A
Maltose
B
Starch
C
Sucrose
D
Lactose
Question 416
Which one among the following is likely to have the highest level of DDT deposition in its body?              
A
Phytoplanktons
B
Sea gull
C
Crab
D
Eel fish
Question 417
Which of the following is concerned with CO2 fixation ?          
A
Krebs cycle
B
Calvin cycle
C
Omithine cycle
D
Glycolysls
Question 418
The function of glyoxysome is:            
A
protein metabolism
B
carbohydrate metabolism
C
fat metabolism
D
protein synthesis
Question 419
Citric acid is industrially best produced by:        
A
Streptococcus lactis
B
Aspergillus niger
C
Penicillium purpurogenom
D
Lactobacillus debreukil
Question 420
Who first conducted experiment on evolution to prove biochemical origin of life?          
A
MiIler and Urey
B
Darwin
C
Lamarck
D
Weismann
Question 421
Which one is mismatched?      
A
Bowmann’s capsule—glomerular filteration
B
PCT— absorption of Na+ and K+
C
DCT—absorption of glucose
D
None of the above
Question 422
In ruminants cellulose digestion takes place by:        
A
bacteria
B
protozoans
C
virus
D
both (a) and (b)
Question 423
The neuromuscular transmitter is:        
A
dopamine
B
epineph rifle
C
norepinephrine
D
acetylcholine
Question 424
 Haversian canals are found in:      
A
internal ear of mammal
B
external ear of mammal
C
long bone of rabbit
D
spinal chord
Question 425
Phloem conducts food by:      
A
perforated sieve plates
B
bast fibres
C
xylem parenchyma
D
xylem fibres
Question 426
Relationship between different organisms can be best described by:          
A
blood web
B
pyramid of energy
C
pyramid of mass
D
Eltonian pyramid
Question 427
Which of the following required in translocation of food in plants?          
A
Xylem
B
Phloem
C
Sclerenchyma
D
Collenchyma ‘
Question 428
In situ conservation of natural genetic resources can be achieved by establishing:            
A
national park
B
wild life sanctuaries
C
biosphere reserve
D
all of the above
Question 429
Bone marrow does not occur in:          
A
amphibians
B
birds
C
reptilia
D
apes
Question 430
Smallest part of DNA, which takes part in crossing over is called:        
A
gene
B
allele
C
recon
D
none of these
Question 431
During protein denaturation which of the following is disrupted?          
A
2D structure
B
3D structure
C
Peptide bond
D
AA sequence ‘
Question 432
Which one of the following gases can deplete ozone layer in the upper atmosphere?        
A
Ammonia
B
Methane
C
Carbon monoxide
D
Sulphur dioxide
Question 433
Book lungs are respiratory organs of:          
A
Mollusca
B
Mammals
C
Arachnida
D
Annelida
Question 434
Seedless water melons are obtained by:      
A
triploidy
B
gibberellin application
C
haploidy
D
vegetative propagation
Question 435
DNA and histone proteins are synthesized during the following phase of cell cycle:          
A
S-phase
B
G2-phase
C
G1-phase
D
None of these
Question 436
Formation of RNA from DNA is known as:          
A
transcription
B
translation
C
replication
D
recombination
Question 437
Study of periodical changes in plants in relation to seasonal changes              
A
Physiognomy
B
Phycology
C
Phenology
D
Photoperiodism
Question 438
Cyanide resistant pathway is:            
A
anaerobic respiration
B
aerobic respiration
C
both (a) and (b)
D
none of the above
Question 439
The largest gland in the human body is:              
A
pancreas
B
brain
C
gall bladder
D
liver
Question 440
 Which of the following is initiating codon?          
A
AUG
B
AUU
C
UAG
D
None of these
Question 441
A homozygous red flower is crossed with recessive white. Red is dominant over white. The progeny in the Fl generation will be:        
A
all red
B
all white
C
50% red and 50% white
D
75% red, 25% white
Question 442
Secondary cell wall grows by:          
A
deamination
B
calcicole
C
apposition
D
none of these
Question 443
Which of the following is involved in the catalysis of link reaction during aerobic respiration’?          
A
Vitamin-A
B
Vitamin-B1
C
Vitamin-B6
D
Vitamin-K
Question 444
Solenocytes are used for:        
A
elimination of nitrogenous excretory wastes
B
respiration
C
digestion
D
all of the above
Question 445
Leydig cells are found in:        
A
heart
B
lungs
C
spleen
D
testes
Question 446
Triticum monococcum is:        
A
diploid
B
triploid
C
tetraploid
D
hexaploid
Question 447
A plant which is cultivated by tissue culture technique is:          
A
Citrus
B
Apple
C
Pear
D
Guava
Question 448
Which of the following cannot be isolated from plants?              
A
Riboflavin
B
Niacin
C
Vitamin B12
D
Vitamin C
Question 449
Mode of nutrition in Trypanosoma is:            
A
saprozoic
B
parasitic
C
autotropic
D
phototropic
Question 450
Coverstone of theory of Darwin was:      
A
natural selection
B
inheritance of acquired characters
C
omnis cellula e cellula
D
higher productivity
Question 451
Pseudostratif led epithelium is found in:            
A
pharynx
B
trachea
C
testis
D
epidermis
Question 452
The genes concerned with the production of cancer are called              
A
cancer genes
B
carinogenes
C
carcinomas
D
oncogenes
Question 453
Examples of regional pollution are:        
A
acid rain
B
smog
C
both (a) and (b)
D
none of the above
Question 454
Genes are present on:          
A
chromosomes
B
lamellae
C
plasma membrane
D
mesosomes
Question 455
Which of the following is absent in DNA?          
A
U
B
A
C
T
D
G
Question 456
Both mimic and model are harmful to the predator;          
A
Batesian mimicry
B
warning mimicry
C
concealing mimicry
D
Mullerian mimicry
Question 457
In drumstick the seeds are dispersed by:      
A
water
B
animals
C
wind
D
explosive mechanism
Question 458
The jumping genes in maize were discovered by:        
A
H. G. Khorana
B
T.H. Morgan
C
Beadle and Tatum
D
Barbara Mc Clintock
Question 459
Monosomy and trisomy are respectively:          
A
n—l,n+2
B
2n+ 2,2n+l
C
2 n —I, 2 n +1
D
n —2, 2 n +1
Question 460
VLscum album grows on trees. This is an example of:          
A
symbiosis
B