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
Mendelian recombinations are due to:    
A
linkage
B
independent assortment of genes
C
mutation
D
dominant characters
Question 2
Ducts of Bellini are present in:     
A
medulla oblongata
B
liver
C
kidney
D
intestine
Question 3
Which one is a sex linked disease?     
A
Colourblindness
B
Haemophilia
C
Syphilis
D
Both (a) and (b)
Question 4
Protein in silk thread is:     
A
fibroin
B
keratin
C
albumin
D
globulin
Question 5
Binary fission is a mode of: ?   
A
micropropagation
B
vegetative propagation
C
macropropagation
D
sexual reproduction
Question 6
Field capacity is associated with:   
A
capillary, hygroscopic, water vapour combined
B
capillary only
C
gravitational only
D
gravitational as well as
Question 7
Confusion technique involves the use of:       
A
juvenile hormone
B
pheromones
C
ecdysone
D
hormones
Question 8
Cyanide resistant pathway is:      
A
anaerobic respiration
B
aerobic respiration
C
both (a) and (b)
D
none of the above
Question 9
Pseudocoelomic organisms belong to:     
A
Arthropoda
B
Annelida
C
Mollusca
D
Aschelminthes
Question 10
Anabaena has an immense potential as a:    
A
biofertilizer
B
food
C
medicines
D
sewage disposal
Question 11
Decarboxylation is not involved in:   
A
electron transport system
B
C4 cycle
C
Krebs cycle
D
alcoholic fermentation
Question 12
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 13
The function of peroxisomes is:    
A
H202 destruction
B
conversion of fat to carbohyd rates
C
detoxification of heavy metals
D
oxidative phosphorylation
Question 14
The physiological capacity to produce off springs is called        
A
birth rate
B
biotic potential
C
crude natality
D
mortality
Question 15
Connecting link between Annelida and Mollusca is    
A
Neopilina
B
Nautilus
C
glochidium larva
D
veliger larva
Question 16
Damaged sieve tubes are sealed by deposition of:       
A
pectin
B
callus
C
suberin
D
lignin
Question 17
Luscuta is a      
A
parasitic plant
B
symbiotic plant
C
predator
D
decomposer
Question 18
Menstrual How occurs due to lack of     
A
progesterone
B
FSH
C
oxytocin
D
vasopressin
Question 19
Which is an electron carrier common to both photosynthesis and respiration?     
A
Cytochrome
B
Phytochrome
C
Pheophytin
D
Plastocyanin
Question 20
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 21
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 22
Formation of glucose from lipids is:    
A
gluconeogenesis
B
glycogenolysis
C
glycogenesis
D
none of these
Question 23
Lactic acid is formed in     
A
fermentation
B
glycolysis
C
HMP pathways
D
none of these
Question 24
Polyembryony is shown by:    
A
Selaginella
B
Pinus
C
Man gifera
D
None of these
Question 25
The conversion of NO3 to N2 is called:       
A
nitrification
B
denitrification
C
ammonification
D
nitrogen fixation
Question 26
Tendons and ligaments are:    
A
epithelial tissue
B
fibrous connective tissue
C
nerve tissue
D
muscular tissue
Question 27
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 28
Enzyme found functional in lysosome is     
A
acid phosphatase
B
basic phosphatase
C
oxido reductase
D
liases \
Question 29
Penicillin was used in     
A
I world war
B
II world war
C
both (a) and (b)
D
none of these
Question 30
Reindeer moss is a:    
A
pteridophyta
B
bryophyta
C
lichen
D
gymnosperm
Question 31
Which have no specific organ for respiration but respire?      
A
Rabbit
B
Cockroach
C
Earthworm
D
Frog
Question 32
Which of the following is vestigial organ in human?       
A
coccyx
B
splint bone
C
wings
D
pelvic girdle
Question 33
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 34
The pH of blood is:     
A
between 7-8
B
between 2-4
C
between 12-14
D
between 2-5
Question 35
Ethylene is used for:    
A
decrease the senescence
B
increase the height of stem
C
ripening of fruits
D
prevention of leaf fall
Question 36
Herdmania belongs to which subphyla:     
A
Cephalochordata
B
Hemichordata
C
Urochordata
D
Protochordata
Question 37
Citric acid is industrially best produced by:    
A
Streptococcus lactis
B
Aspergillus niger
C
Penicillium purpurogenom
D
Lactobacillus debreukil
Question 38
Phloem conducts food by:   
A
perforated sieve plates
B
bast fibres
C
xylem parenchyma
D
xylem fibres
Question 39
Which is not a feature of annelids?     
A
Metameric segmentation
B
Nephridia
C
Pseudocoelom
D
Clitellum
Question 40
The heartbeat of which animal is myogenic in nature?     
A
Cockroach
B
Leech
C
Elephant
D
All of the above
Question 41
Which of the following is not a function of liver:    
A
Production of bile
B
Production of insulin
C
Glycogen storage
D
Detoxification
Question 42
Ozone hole results in:   
A
UV radiation reaches the earth
B
cataract
C
increase in skin cancer
D
all of the above
Question 43
Gibberellin was first isolated from:        
A
oat coleoptile
B
Actinomycete
C
fungus
D
soybean seedlings
Question 44
At which stage of mitosis chromatids separated and passes to different poles?     
A
Prophase
B
Metaphase
C
Anaphase
D
Telophase
Question 45
Who first conducted experiment on evolution to prove biochemical origin of life?     
A
MiIler and Urey
B
Darwin
C
Lamarck
D
Weismann
Question 46
Hardening in tissue culture is:   
A
keeping at 30-50°C temperature for about 30 minutes
B
acclimatisation of tissue culture plants slowly before growing in the field
C
plunging the vials into water at 37-40°C
D
none of the above
Question 47
Secondary host of Schistosoma is:    
A
Hydra
B
Euglena
C
Snail
D
Pheretima
Question 48
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 49
Chemofusion and dectrofusion are characteristic of:    
A
mutations
B
cloning
C
protoplast fusion
D
eugenics
Question 50
Phycomycetes is a class in kingdom        
A
Protista
B
Fungi
C
Plantae
D
Animala
Question 51
Which of the following enzyme is used in DNA multiplication ?      
A
RNA pplym erase
B
DNA endonuclease
C
Exonuc lease
D
DNA polymerase
Question 52
Secondary metabolite is:     
A
sugar
B
glucose
C
antibiotics
D
all of these
Question 53
Ethylene is involved in:   
A
aerobic respiration
B
anaerobic respiration
C
climacteric respiration
D
fermentation
Question 54
Emulsification is the function of:     
A
bile
B
lipases
C
esterases
D
proteases
Question 55
Cells having secretory function have abundant:    
A
lysosomes
B
endoplasmic reticulum
C
dictyosomes
D
osteosomes
Question 56
Ginseng is an important drug of:     
A
America
B
Egypt
C
lndia
D
China
Question 57
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 58
First stable product of €3 pathway is:      
A
Oxalo-acetic acid
B
3 phosphoglyceric acid
C
RuBP
D
Phosphoenol pyruvate
Question 59
Statoliths are involved in:    
A
phototropism
B
hydrotropism
C
chemotropism
D
gravitropism
Question 60
Weed killers generally have properties much like that of:    
A
hormone
B
carbohydrate
C
enzymes
D
all of these
Question 61
Protein packaging is done by:    
A
Golgi apparatus
B
ribosomes
C
end oplasmic reticulum
D
nucleolus
Question 62
The non-membranous organelles are:     
A
centrioles
B
ribosomes
C
nucleolus
D
all of these
Question 63
Energy enters in a food chain through:     
A
producers
B
primary consumers
C
secondary consumers
D
tertiary consumers
Question 64
The neuromuscular transmitter is:    
A
dopamine
B
epineph rifle
C
norepinephrine
D
acetylcholine
Question 65
Phylogenetic system was given by     
A
Engler and Prantl
B
Pliny
C
John Ray
D
R.H. Whittaker
Question 66
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 67
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 68
Node of Ranvier is found in:    
A
right auricle
B
muscle bundles
C
dendrite
D
axon
Question 69
The gene interaction when one gene masks the effect:    
A
complementary gene action
B
supplementary gene action
C
duplicate gene action
D
epistasis
Question 70
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 71
Streptococcus is employed in the manufacturing of:       
A
wine
B
bread
C
cheese
D
all of these
Question 72
National Botanical Research Institute is located at:     
A
New Delhi
B
Mumbai
C
Lucknow
D
Dehradoon
Question 73
In ruminants cellulose digestion takes place by:    
A
bacteria
B
protozoans
C
virus
D
both (a) and (b)
Question 74
During lneiosis crossing over occur between which part of homologous chromosome?   
A
Sister chromatids
B
Nonsister chromatids
C
Genes
D
Alleles
Question 75
O2evolution is directly associated with:    
A
PS-I
B
PS-Il
C
phytochrome
D
phycocyanin
Question 76
Hesperidium of orange is a modification of:    
A
berry
B
drupe
C
pome
D
aggregate fruit
Question 77
Procambium forms:   
A
cork cam bium
B
vascular tissue
C
vascular cambium
D
intercalary meristem
Question 78
Relationship between different organisms can be best described by:      
A
blood web
B
pyramid of energy
C
pyramid of mass
D
Eltonian pyramid
Question 79
 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 80
Which of the following cannot be isolated from plants?       
A
Riboflavin
B
Niacin
C
Vitamin B12
D
Vitamin C
Question 81
Use and disuse’ theory was proposed by:     
A
Lamarck
B
Darwin
C
Hugo de Vries
D
Maithus
Question 82
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 83
Sexual reproduction in algae results in the formation of:     
A
opspore
B
zoos pore
C
zygote
D
zygospore
Question 84
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 85
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 86
A gene which gives multiple phenotypic effects    
A
complementary genes
B
lethal genes
C
pleiotropic genes
D
holandric genes
Question 87
In ecotone some species become abundant:       
A
sibling species
B
endemic species
C
rare species
D
edge species
Question 88
Theory of catastropism was supported by:       
A
Luis Pasteur
B
A. I. Oparin
C
Cuvier
D
Haldane
Question 89
Osphradium ofPlia globosa is:     
A
photoreceptor
B
thermoreceptor
C
chemoreceptor
D
tangoreceptor
Question 90
Overlapping region between two ecosystems:       
A
biome
B
ecotone
C
niche
D
photiczone
Question 91
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 92
Humus is present in:     
A
horizon-A
B
horizon-O
C
horizon-B
D
horizon-C
Question 93
Pseudostratif led epithelium is found in:       
A
pharynx
B
trachea
C
testis
D
epidermis
Question 94
The habitat of a species along with its function is:    
A
home range
B
tersitory
C
boundary
D
niche
Question 95
Which of the following is an endangered animal?      
A
Hanuman monkey
B
Langur
C
Antelope
D
Lion tailed maca que
Question 96
Which of the following statement about bee colony is wrong?   
A
Domesticated species are A. indica and A. mellifera
B
Sex differentiation is due to haplodiploidy
C
They are female dominant societies
D
Fertilized eggs develop into sterile females only
Question 97
Which of the following plant hormone if extracted from fungus?     
A
Auxin
B
Gibberellin
C
Cytokinin
D
2, 4-D
Question 98
Action of lysozyme is       
A
physiological
B
anatomical
C
morphological
D
none of these
Question 99
Physiological heterospory is seen in:    
A
Ch!amydomonas
B
Rhizopus
C
Se/a ginella
D
Lycopodium
Question 100
In genetic engineering, the terms vector is applied for:    
A
plasmid
B
sources of DNA
C
cell which receives
D
virus
Question 101
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 102
Yeast belongs to:    
A
Zygomycetes
B
Basidiomycetes
C
Ascomycetes
D
Phycomycetes
Question 103
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 104
Which of the following is a living fossil?     
A
Sphenodon
B
Heloderma
C
Rabbit
D
Frog
Question 105
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 106
In which the pneumatophores are found?     
A
Tinospora
B
Pinus
C
Rhizophora
D
None of these
Question 107
Linkage group in E. coil is/are     
A
4
B
2
C
1
D
5
Question 108
In drumstick the seeds are dispersed by:   
A
water
B
animals
C
wind
D
explosive mechanism
Question 109
Vit. B12 is available to ruminants by:      
A
plants
B
microorganisms in caecum
C
animals
D
all of the above
Question 110
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 111
Sertoli cells help in:   
A
maturation of eggs
B
matu ration of sperms
C
enzyme production
D
ovulation
Question 112
Metamorphosis in frog is hastened by:       
A
thyroxine
B
insulin
C
glucagon
D
adrenalin
Question 113
Compositae is also called:     
A
Asteraceae
B
Myrtaceae
C
Fabaceae
D
Zingiberaceae
Question 114
Water bloom’ is generally caused by:     
A
green algae
B
blue-green algae
C
bacteria
D
Hydrilla
Question 115
Bacterial mutants requiring special nutrients are known as:     
A
prototrophs
B
autotrophs
C
heterotrophs
D
auxotrophs
Question 116
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 117
Corpus luteum secretes     
A
progesterone and estrogen
B
LH
C
only progesterone
D
progesterone and LH
Question 118
Cilia of gills of bivalve molluscs help in:     
A
feeding
B
digestion
C
reproduction
D
excretion
Question 119
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 120
Unwinding of DNA is done by:      
A
primase
B
exonuclease
C
helicase
D
ligase
Question 121
Which of the following is a component of electron transport chain in mitochondria ?   
A
Phytochrome
B
Cytochrome oxidase
C
Plastocyanin
D
Carotenoids
Question 122
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 123
Down’s syndrome is characterised by:      
A
21st trisomy
B
two X and one Y chromosome
C
19 trisomy
D
only one X chromosome
Question 124
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 125
Heterozygosity is most favoured in plants following:        
A
cleistogamy
B
autogamy
C
xenogamy
D
geitonogamy
Question 126
Predation and parasitism are which type of rnteractions:        
A
(+,+)
B
(+,O)
C
(-,-)
D
(+,-)
Question 127
The movement of pollen tube is called:       
A
chemotropism
B
thermotaxis
C
thermonastic
D
hydrotropism
Question 128
Tendons and ligaments are specialized types of:       
A
nervous tissue
B
muscular tissue
C
epithelial tissue
D
fibrous connective tissue
Question 129
A codon is made up of:     
A
single nucleotide
B
two nucleotides
C
three nucleotides
D
four nucleotides
Question 130
Vernalisation is response due to:   
A
high temperature
B
optimum temperature
C
low temperature
D
none of the above
Question 131
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 132
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 133
Apnoea is:   
A
absence of breathing
B
decreased ventilation
C
increased ventilation
D
laboured breathing
Question 134
Pancreatic secretion and gall bladder contraction are stimulated by:      
A
gastrin
B
enterocrinin
C
enterogasterone
D
cholesystokinin
Question 135
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 136
A cell active in protein synthesis will rich in:    
A
ribosome
B
Golgi bodies
C
mitochondria
D
lysosome
Question 137
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 138
Bilaterally symmetrical but acoelomate animal is:     
A
liver fluke
B
jelly fish
C
round worms
D
crab
Question 139
Scorpion belongs to a class to which one of the following also belong?     
A
Ticks
B
Crabs
C
Branicles
D
Cockroaches
Question 140
Quinine is obtained from:    
A
bark of Cinchona
B
root of Cinchona
C
wood of Cinchona
D
leaves of Cinchona
Question 141
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 142
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 143
 Which of the following is initiating codon?     
A
AUG
B
AUU
C
UAG
D
None of these
Question 144
Codes of rn-RN A and proteins are:    
A
coplanar
B
colinear
C
nonlinear
D
irregular
Question 145
Formation of RNA from DNA is known as:      
A
transcription
B
translation
C
replication
D
recombination
Question 146
Triticum monococcum is:    
A
diploid
B
triploid
C
tetraploid
D
hexaploid
Question 147
Which is a unit of evolution?     
A
Cell
B
Individual
C
Population
D
Species
Question 148
Enzymes of electron transport system are present in:    
A
inner mitochondrial membrane
B
matrix
C
intermembranous space
D
endoplasmic reticulum
Question 149
Which of the following is absent in DNA?     
A
U
B
A
C
T
D
G
Question 150
Food is translocated in plants through:    
A
xylem
B
phloem
C
cambium
D
cork
Question 151
Both mimic and model are harmful to the predator;      
A
Batesian mimicry
B
warning mimicry
C
concealing mimicry
D
Mullerian mimicry
Question 152
Knee joint is:       
A
cartilageneous
B
fibrous
C
gliding joint
D
synovial
Question 153
Integumentary nephridia are also called:   
A
enteronephric
B
exonephric
C
sometimes enteronephric and sometimes exonephric
D
both (a) and (b)
Question 154
Histamine is secreted by:    
A
goblet cell
B
nerve cell
C
Kupffer cell
D
mast cell
Question 155
Eggs of egg laying mammals are:    
A
macrolecithal
B
alecithal
C
mesolecithal
D
telolecithal
Question 156
Mushroom belongs to:    
A
Ascomycetes
B
Basidiomycetes
C
Phycomycetes
D
Zygomycetes
Question 157
Enzyme having different molecular arrangement but similar functions, is:     
A
isoenzyme
B
holoenzyme
C
apoenzyme
D
coenzyme
Question 158
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 159
Stratification is seen in     
A
Tundra
B
Tropical forest
C
Temperate forest
D
Desert
Question 160
Which of the following is balancing organ?     
A
Organ of Corti
B
Cochlea
C
Vestibular region
D
All of these
Question 161
Eutrophication is seen in:     
A
saline soil
B
agricultural land near thermal plant
C
lake
D
mountain
Question 162
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 163
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 164
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 165
Overlapping region between two ecosystems:       
A
biome
B
ecotone
C
niche
D
photiczone
Question 166
The formation of egg and sperm is affected by:       
A
LH
B
MH
C
TSH
D
FSH
Question 167
Lactose is composed of following compunents:       
A
glucose + fructose
B
gluco’e + glucose
C
glucose + fructose + galactose
D
glucose + galactose
Question 168
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 169
Which of the phylum has none of fresh water form?    
A
Echinodermata
B
Mollusca
C
Chordata
D
Porifera
Question 170
The shape of eye lens is changed by:       
A
pupil
B
iris
C
optic nerve
D
ciliary muscles
Question 171
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 172
Solenocytes are used for:    
A
elimination of nitrogenous excretory wastes
B
respiration
C
digestion
D
all of the above
Question 173
Ureotelic organisms:      
A
do not have urease
B
do not excrete urea
C
cannot form uric acid
D
live in water only
Question 174
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 175
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 176
Healing of wound in plants takes place by at activity of:    
A
ground tissue
B
callus deposition
C
secondary meristem
D
permanent tissue
Question 177
 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 178
What is not seen during mitosis in somatic cells?      
A
Spindle fibres
B
Chromosome movement
C
Disappearance of nucleolus
D
Synapsis
Question 179
Binomial nomenclature was given by:    
A
Aristotle
B
Hutchinson
C
Julian Huxley
D
Linnaeus
Question 180
Which plant hormone promotes seed, bud dormancy and causes stomata I closure?      
A
IAA
B
Abscisic acid
C
GAi
D
Cytokinin
Question 181
Which of the following inhibits 02 release light phase?     
A
PMA
B
Zeatin
C
DCMU
D
None-of these
Question 182
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 183
Species living in a restricted geographical areais:       
A
sympatric
B
allopatric
C
sibling
D
keystone
Question 184
Pancreas is absent in which group of vertebrates?       
A
Reptiles
B
Cyclostomates
C
Birds
D
Mammals
Question 185
Ribosomes that occur exclusively in mitochondria is:       
A
705
B
555
C
30S
D
SOS
Question 186
In plants translocation occurs in the form of:       
A
starch
B
sucrose
C
glucose
D
fructose
Question 187
Chromosomes can be seen best during:    
A
prophase
B
metaphase
C
anaphase
D
telophase
Question 188
Large unit of land having different types of plants and animals        
A
uniform vegetation
B
biome
C
ecosystem
D
niche
Question 189
Alcohol is present in which of the following?     
A
Vitamin D
B
Vitamin 83
C
Vitamin B5
D
Vitamin C
Question 190
Maximum diversity is found in which phylum?    
A
Chordata
B
Arthropoda
C
Protozoa
D
Annelida
Question 191
Progesterone pill helps in preventias pregnancy by not allowing:     
A
ova formation
B
fertilization
C
implantation
D
none of these
Question 192
Pick out the odd one:      
A
Aniielida
B
Reptilia
C
lnsecta
D
Taenia
Question 193
Fossilization would occur when flora and fauna are burned by:   
A
natural processes
B
industrial processes
C
both (a) and (b)
D
all of the above
Question 194
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 195
ELISA test is used for detection of:     
A
antibodies
B
viral disease
C
AIDS
D
all of these
Question 196
Juicy part of litchi is an outgrowth of:      
A
nucellus
B
micropyle end
C
chalazal end
D
outer integument
Question 197
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 198
Which is not used up in human body?    
A
Calcium
B
Phosphorus
C
Zinc
D
Barium
Question 199
Bt toxin obtained from    
A
prokaryotes
B
eukaryotes
C
both (a) and (b)
D
none of these
Question 200
Smallest part of DNA, which takes part in crossing over is called:    
A
gene
B
allele
C
recon
D
none of these
Question 201
Lateral root or ginates from:    
A
endodermis
B
pericycle
C
cortex
D
phloem
Question 202
Salmon is:    
A
anadromous fish
B
catadromous fish
C
mollusca
D
insect
Question 203
Stop codons are:       
A
AUG, GUG
B
UAA, UGA, UAG
C
UAC, UGG
D
AGU, AGA, UAC
Question 204
The function of polymerase chain reaction (PCR) is       
A
translation
B
transduction
C
DNA amplification
D
none of the above
Question 205
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 206
Theory of Pangenesis was proposed by:     
A
Lamarck
B
Weismann
C
Hugo de Vries
D
Darwin
Question 207
Vernalization is done at:     
A
lower temperature
B
low light intensity
C
higher temperature
D
high light intensity
Question 208
Cycas circinalis is a source of:     
A
resin
B
timber
C
essential oil
D
starch
Question 209
Parasexuality was first discovered in:     
A
bacteria
B
virus
C
fungi
D
none of these
Question 210
Ribosome mainly has:    
A
DNA
B
RNA
C
carbohydrate
D
none of these
Question 211
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 212
Cytokinin synthesis is maximum in:       
A
leaves
B
roots
C
fruits
D
shoot tip
Question 213
Pigment present in cyanobacteria is:    
A
r-phycocyanin
B
r-phycoerythrin
C
c-phycocyanin
D
anthocyanin
Question 214
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 215
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 216
Bone marrow does not occur in:     
A
amphibians
B
birds
C
reptilia
D
apes
Question 217
Haematuria means.      
A
RBC in the urine
B
WBC in the urine
C
both (a) and (b)
D
none of the above
Question 218
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 219
Cow dung is appropriately used as:       
A
fuel
B
building material
C
medicine
D
manure
Question 220
Plants require sulphur for:    
A
DNA replication
B
protein synthesis
C
synthesis of glucose
D
formation of ATP
Question 221
Cyanide resistant respiration is characteristic of:     
A
viruses
B
bacteria
C
plants
D
animals
Question 222
In eukaryotes basic structural unit made of histone and DNA:       
A
nucleosome
B
nucleolus
C
chromosome
D
lysosome
Question 223
Lam pbrush chromosomes are seen in:    
A
interphase
B
zygotene
C
diplotene
D
metaphase
Question 224
The wall of bacteria consists of:   
A
N-acetyl glucosamine
B
N-acetyl muramic acid
C
both (a) and (b)
D
cellulose
Question 225
Hassal’s bodies/corpuscles:     
A
adrenal medula
B
thyroid
C
thymus
D
parathyroid
Question 226
Which one of the following is common in plant and animal ?       
A
Mitochondria
B
Tonoplast
C
Centriole
D
None of these
Question 227
 Which is not true about prokaryotes?    
A
DNA is complexed with histones
B
Well developed nucleus absent
C
Mesosome present
D
Mitochondria absent
Question 228
When Ronald Ross found malaria parasite infection, in mosquito?     
A
1897
B
1850
C
1835
D
1859
Question 229
African sleeping sickness is caused by:       
A
Trypanosoma
B
Leishmania
C
Latimeria
D
Plasmodium
Question 230
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 231
Angiosperms differ from gymnosperms in:   
A
seeds
B
fruits
C
male gametophyte
D
female gametophyte
Question 232
Resolving power of scanning electron microscope is     
A
0.001 nm
B
0.01 nm
C
20 nm
D
0.0001
Question 233
Fungi differ from other kingdom in being:    
A
unicellular
B
unicellular, consumers
C
multicellular, decomposers
D
multicellular, consumer
Question 234
Superiority of hybrid over parents is:     
A
introduction
B
selection
C
hybridized progeny
D
hybrid vigour
Question 235
Phytotron is:   
A
a controlled condition chamber for tissue culture
B
leaf culture process
C
special culture of plants
D
root culture process
Question 236
Which of the following is not secreted by anterior pituitary?      
A
Prolactin
B
FSH
C
Growth hormone
D
ADH
Question 237
Cytokinins are formed in:       
A
roots
B
leaves
C
fruits
D
stems
Question 238
Biological species concept emphasizes on:   
A
geographical isolation
B
reproductive isolation
C
physiological isolation
D
none of the above
Question 239
Juvenile hormone is secreted by:       
A
thyroid gland
B
thymus gland
C
adrenal gland
D
corpora allata
Question 240
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 241
Cytokinins are formed in:     
A
roots
B
leaves
C
fruits
D
stems
Question 242
The edible part of litchi is:    
A
aril
B
endocarp
C
mesocarp
D
none of these
Question 243
Soil erosion is prevented by:    
A
deforestation
B
afforestation
C
reduction of CFCs production
D
use of CNG in all transports
Question 244
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 245
Mycorrhiza is found in     
A
oligotrophic soil
B
eutrophic soil
C
both (a) and (b)
D
none of the above
Question 246
Which of the following metal is present in vitamin B12?     
A
Cobalt
B
Copper
C
Zinc
D
Magnesium
Question 247
Which of the following organism is pseudocoelomate?.    
A
Hookworm
B
Liver fluke
C
Jellyfish
D
Leech
Question 248
Testosterone is secreted by    
A
Leydig cell
B
Sertolicell
C
spermatogenic cell
D
all of the above
Question 249
Endoplasmic reticulum is studied with:     
A
ribosomes
B
lysosomes
C
glyoxisomes
D
microsomes
Question 250
Which is an example of true pyramid in an ecosystem?      
A
Pyra mid of a biomass
B
Pyramid of number
C
Pyramid of energy
D
None of the above
Question 251
Which of the following is concerned with CO2 fixation ?     
A
Krebs cycle
B
Calvin cycle
C
Omithine cycle
D
Glycolysls
Question 252
Amoebaisa/an:      
A
unicellular animal
B
octacellular animal
C
multicellular animal
D
all of the above
Question 253
Pyruvic acid is the end product of:      
A
Krebs cycle
B
electron transport system
C
photosynthesis
D
glycolysis
Question 254
Which one of the following organdIes lack membranes?     
A
Ribosome
B
Mitochondria
C
Golgi complex
D
Nucleus
Question 255
Human population growth is:      
A
lag
B
stationary
C
exponential
D
none of these
Question 256
Multiplication of DNA is called:       
A
transcription
B
translation
C
replication
D
transduction
Question 257
 Tapetum is:       
A
protective
B
reproductive
C
nutritive
D
respiratory
Question 258
Rajaji national park is in:    
A
Karnataka
B
Rajasthan
C
UttarPradesh
D
Assam
Question 259
Which of the following is a nitrogen fixing organism?     
A
BGA
B
Rhizobium
C
Both (a) and (b)
D
Aspergillus
Question 260
In which of the following stage chromosomes are arranged at equatorial plate?     
A
Anaphase
B
Metaphase
C
Prophase
D
Telophase
Question 261
Which of the following is called as ‘Age of Reptiles’?       
A
Coenozoic era
B
Azoic era
C
Mesozoic era
D
Precambrian era
Question 262
Which disaccharide has different linkage?       
A
Maltose
B
Starch
C
Sucrose
D
Lactose
Question 263
Sporangia bearing leaves in pteridophytes are called:       
A
ramenta
B
son
C
sporophylls
D
indusium
Question 264
Potato is native to:     
A
South America
B
North America
C
South East
D
Australia
Question 265
The largest phylum in respect of number of species is :       
A
Coelenterata
B
Arthropoda
C
Protozoa
D
Porifera
Question 266
Examples of regional pollution are:    
A
acid rain
B
smog
C
both (a) and (b)
D
none of the above
Question 267
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 268
The organism which is used for gene transfer in higher organisms is?    
A
Agrobacterium tumefaciens
B
E.coIi
C
Acetobacter
D
Bacillus thuringiensis
Question 269
Cotton is:    
A
epidermal tissue system
B
vascular tissue system
C
meristematic tissue system
D
ground tissue-system
Question 270
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 271
Chromosomes that determine male sex in Melandrium plant is:     
A
Y chromosome
B
X chromosome
C
XX chromosome
D
None of the above
Question 272
Weed killers generally have properties much like that of:    
A
hormone
B
carbohydrate
C
enzymes
D
all of these
Question 273
Nissl’s granules are present in:    
A
RBC
B
WBC
C
both (a) and (b)
D
nerve cells
Question 274
Myxoedema is a disorder of:      
A
parathyroid gland
B
adrenal gland
C
pituitary gland
D
thyroid gland
Question 275
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 276
Agranal chioroplast are found in:    
A
Bryophytes
B
Gymnospenns
C
Green algae
D
Angiosperms
Question 277
Vital capacity of lung is      
A
TV+IRV+ERV
B
TV+IRV+RV
C
TV+ERV
D
IRV+ERV
Question 278
Sinus venosus is present in:   
A
birds only
B
birds and mammals
C
reptiles and birds
D
fishes, amphibians and reptiles
Question 279
In which phylum larva/young one is bilaterally symmetrical but adult one is radially symmetrical?     
A
Echinodermata
B
Porifera
C
Arthropoda
D
Mollusca
Question 280
Which is correct?   
A
Slime moulds are haploid
B
Protozoan lack cell wall
C
Dinoflagellates are immotile
D
Pellicle is absent in Euglena
Question 281
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 282
Postganglionic nerve fibres of sympathetic system are:     
A
adrenergic
B
cholinergic
C
both (a) and (b)
D
none of these
Question 283
Which of the following mineral deficiency will cause death of stem and root tips?       
A
)Mo
B
Ca
C
S
D
Fe
Question 284
Maximum noise permissible during day time in residential areas:        
A
75dB
B
55dB
C
65dB
D
45dB
Question 285
Veliger larva is found in the phylum:    
A
Mollusca
B
Echinodermata
C
Arthropoda
D
Cnidaria
Question 286
Which of the following is a basic amino acid?     
A
Leucine
B
Lysine
C
Methionine
D
Aspartic acid
Question 287
Polytene chromosomes are found in:       
A
salivary gland
B
oocytes
C
green glands
D
none of these
Question 288
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 289
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 290
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 291
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 292
Sub units in prokaryotic ribosomcs are     
A
605-405
B
505-305
C
40S-30S
D
50S-20S
Question 293
A plant which is cultivated by tissue culture technique is:     
A
Citrus
B
Apple
C
Pear
D
Guava
Question 294
Life span of RBC is:       
A
50 days
B
70 days
C
120 days
D
220 days
Question 295
Organisms found in extreme temperature are:       
A
cyanobacteria
B
archaebacteria
C
fungi
D
eubacteria
Question 296
The endoskeleton of cell is made up of:    
A
deutoplasm
B
protoplasm
C
endoplasmic reticulum
D
cell wall
Question 297
Which of the following organism is useful in degrading organic pollutants:     
A
Nitrosomonas
B
Chiamydomonas
C
Actinomycetes
D
Pseudomonas
Question 298
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 299
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 300
Wood ofCycos is:     
A
pycnoxylic only
B
polyxylic only
C
manoxylic and diploxylic
D
none of the above
Question 301
The taste receptors of cockroach are:     
A
compounds eyes
B
companiform sensillae
C
palps of maxillary and labium
D
tactile hairs
Question 302
Ontogeny recapitulates phylogeny. This is:   
A
Pauling law
B
Hardy Weinberg law
C
Biogenetic law
D
Thomas law
Question 303
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 304
Cystoliths are composed of:    
A
glucosides
B
calcium oxa late
C
calcium carbonate
D
magnesium oxalate
Question 305
Synaptic vesicle is found in    
A
pre synaptic neuron
B
post synaptic neuron
C
synaptic cleft.
D
none of the above
Question 306
Vascular cambium in roots takes its origin from:   
A
pericycle
B
conjunctive parenchyma
C
both (a) and (b)
D
none of the above
Question 307
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 308
DNA synthesis occurs in:     
A
prometaphase
B
prophase
C
interphase
D
telophase
Question 309
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 310
Which part of brain control intellectual ability?     
A
Frontal lobe
B
Parietal lobe
C
Temporal lobe
D
Occipetal lobe
Question 311
Zygospore is    
A
give rise to zoospores on meiosis
B
equivalent to Ascus, Brasilia
C
dormant stage
D
give raise to asexual spore
Question 312
1:2:1 phenotypic and genotypic ratio is found in:    
A
complementary genes
B
blending inheritance
C
multiple alleles
D
pseudo alleles
Question 313
Prolonged deficiency of thiamine in human diet may lead to:     
A
pellagra
B
ben-ben
C
anaemia
D
haemorrhage
Question 314
Cell organe lie responsible for autolysis:      
A
dictyosome
B
lysosome
C
peroxisome
D
glyoxysome
Question 315
The study of reptiles is called:     
A
Herpetology
B
Dermatology
C
Angiology
D
Parazoology
Question 316
From which of the following plants a medicine for respiratory disorders is obtained ?     
A
Ephedra
B
Eucalyptus
C
Cannabis
D
Saccharum
Question 317
VLscum album grows on trees. This is an example of:     
A
symbiosis
B
parasitism
C
commensalism
D
predation
Question 318
Who proposed the natural system of classification ?     
A
Carolus Linnaeus
B
John Hutchinson
C
Bentham and Hooker
D
Oswald Tippo
Question 319
Competition of species leads to    
A
extinction
B
mutation
C
greater number of niches are formed
D
symbiosis
Question 320
Hematology is the study of:     
A
bone
B
blood
C
cartilage
D
nerves
Question 321
Deltoid ridge is present in:    
A
femur
B
humerus
C
tibia
D
fibula
Question 322
Which was first photosynthetic organism?     
A
Green algae
B
Red algae
C
Cyanobacteria
D
None of these
Question 323
Black rust of wheat is caused by:     
A
Pucdnia graminis
B
Ustilago
C
Pythium
D
None of these
Question 324
Which of the following controls the function of Sertoli cell?       
A
FSH
B
Estrogen
C
ACTH
D
Testosterone
Question 325
Which of the following gymnosperm has the presence of vessel?    
A
Pinus
B
Ephedra
C
Cycas
D
None of these
Question 326
Abnormal gene is replaced by normal gene through:      
A
gene therapy
B
medicines
C
cloning
D
radiation
Question 327
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 328
Pepsinogen is secreted by      
A
chief cell
B
1 oxyntic cell
C
1 mast cell
D
parietal cell
Question 329
Geotropic response is perceived by:      
A
root tip
B
root hairs
C
elongating cells
D
mature root cells
Question 330
Choose the correct statement about the direction of DNA strand:   
A
5’ —>3’ takes place on template strand
B
3’ —> S’ takes place on new strand
C
5’—> 3’ takes place on leading strand
D
none of the above
Question 331
Universal blood recipient is:    
A
blood group-O
B
blood group-AB
C
blood group-A
D
blood group-B
Question 332
Coverstone of theory of Darwin was:    
A
natural selection
B
inheritance of acquired characters
C
omnis cellula e cellula
D
higher productivity
Question 333
Who coined the term ‘cell?     
A
Purkinje
B
Robert Brown
C
Robert Hooke
D
Hugo von MohI
Question 334
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 335
Study of periodical changes in plants in relation to seasonal changes       
A
Physiognomy
B
Phycology
C
Phenology
D
Photoperiodism
Question 336
 Phytotoxins are secreted by plants in response to fungal reaction. These compounds ax generally:       
A
proteins
B
glycoproteins
C
phenolic compounds
D
lipids
Question 337
The genes concerned with the production of cancer are called       
A
cancer genes
B
carinogenes
C
carcinomas
D
oncogenes
Question 338
Raja ii national park is situated in:    
A
Tamil Nadu
B
Karnataka
C
Uttrakhand
D
Rajasthan
Question 339
 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 340
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 341
Claviceps is a member of:     
A
Ascomycetes
B
Basidiomycetes
C
Zygomycetes
D
Phycomycetes
Question 342
Which of the following enzyme is used making detergent?       
A
Amylase
B
Cellulase
C
Protease
D
Peptidase
Question 343
The instrument by which B.P. of man is determined:   
A
sphygmomanometer
B
B.P. meter
C
altrasound
D
stethoscope
Question 344
Book lungs are respiratory organs of:     
A
Mollusca
B
Mammals
C
Arachnida
D
Annelida
Question 345
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 346
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 347
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 348
ACTH is secreted by:    
A
thyroid gland
B
thymus gland
C
pituitary gland
D
isletsof Langerhans
Question 349
Nerve cells are the part of:    
A
epithelial tissue
B
connective tissue
C
muscles tissue
D
nervous tissue
Question 350
 Haversian canals are found in:   
A
internal ear of mammal
B
external ear of mammal
C
long bone of rabbit
D
spinal chord
Question 351
HCI is secreted by:      
A
chief cells
B
mucous cells
C
salivary glands
D
oxyntic cells
Question 352
Maximum productivity is found in:     
A
grassland
B
tropical rain forest
C
ocean
D
none of the above
Question 353
Eggs of cockroach are:     
A
alecithal
B
microledthal
C
telolecithal
D
centrolecithal
Question 354
Which of the following animals is mostly used in genetics experiments?     
A
Butterfly
B
Fruitfly
C
Housefly
D
Dragonfly
Question 355
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 356
In monocot stem, following is absent:      
A
endodermis
B
hypodermis
C
cortex
D
both (a) and (b)
Question 357
Mode of nutrition in Trypanosoma is:       
A
saprozoic
B
parasitic
C
autotropic
D
phototropic
Question 358
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 359
Philosophic zoologique written by:     
A
Darwin
B
Linnaeus
C
Lamarck
D
Theophrastus
Question 360
Atropa belladona yields medicine used for:    
A
gastric ulcers
B
checking the eyes
C
leprosy
D
constipation
Question 361
Taxon is a:    
A
group of same species
B
any rank in taxomonic hierarchy
C
group of similar genera
D
subdivision of kingdom
Question 362
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 363
During protein denaturation which of the following is disrupted?     
A
2D structure
B
3D structure
C
Peptide bond
D
AA sequence ‘
Question 364
Mycorrhiza helps in:    
A
nutrition uptaking
B
food manufacturing
C
disease resistance
D
disease prevention
Question 365
In osmosis, there is movement of:    
A
solute only
B
solvent only
C
both (a) and (b)
D
neither solute nor solvent
Question 366
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 367
Fluid mosaic model was proposed by:    
A
Singer and Nicholson
B
Robertson
C
Danielli and Davson
D
Huxley
Question 368
The mutation (mechanism of origin of variations) was suggest by:     
A
Mendel
B
Darwin
C
Lamarck
D
de Vries
Question 369
The AIDS test is known as:     
A
ELISA
B
Australian antigen
C
HIV test
D
None of these
Question 370
Single membrane bound organelles are:    
A
lysosome
B
sphaerosome
C
glyoxysome
D
all of these
Question 371
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 372
Who gave theory about embryonic evolution?     
A
Darwin
B
Lamarck
C
Haeckel
D
Dabzansky
Question 373
The back bone of RNA consists of which of the following sugar?     
A
Deoxyribose
B
Ribose
C
Sucrose
D
Maltose
Question 374
One gene one enzyme hypothesis was given by:     
A
Jacob and Monod
B
McClintock
C
Meselson and Stahl
D
Beadle and Tatum
Question 375
The function of glyoxysome is:      
A
protein metabolism
B
carbohydrate metabolism
C
fat metabolism
D
protein synthesis
Question 376
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 377
Jacket of fern antheridium is composed of:    
A
2 cells
B
3 cells
C
4 cells
D
5 cells
Question 378
The layer of cells that secrete enamel of tooth is:     
A
dentoblast
B
ameloblast
C
osteoblast
D
odontoblast
Question 379
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 380
Starfish belongs to phylum:    
A
Porifera
B
Coelenterata
C
Echinodermata
D
Arthropoda
Question 381
Hybrid vigour is due to:   
A
heterosis
B
epistasis
C
complementary genes
D
supplementary genes
Question 382
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 383
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 384
Antennary glands of crustaceans are meant for:      
A
excretion
B
respiration
C
digestion
D
circulation
Question 385
Acetylcholine helps in:    
A
synaptic transmission
B
membrane permeability
C
synaptic delay
D
none of the above
Question 386
Actinomycetes which is a symbiotic nitrogen fixing organism in many plants.:       
A
Streptomyces
B
Anabaena
C
Frankia
D
Rhizobium
Question 387
Mouth parts of housefly are:    
A
siphoning type
B
sponging type
C
biting and chewing
D
piercing and sucking
Question 388
Inclusive fitness theory is proposed by:     
A
Darwin
B
Lamarck
C
Weismann
D
Hamilton
Question 389
Primitive man was originated during:    
A
Miocene
B
Holocene
C
Pleistocene
D
Pliocene
Question 390
The Wolffian duct gives rise to:      
A
scrotum
B
labia major
C
both (a) and (b)
D
epididymis
Question 391
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 392
Maximum photosynthetic activity takes place in:    
A
red light
B
orange light
C
green light
D
yellow light
Question 393
The infected stage of malarial parasite is:   
A
sporozoites stage
B
schizozoites stage
C
merozoites stage
D
metacryptozoites stage
Question 394
Single stranded DNA is found in:    
A
polio viruses
B
rice dwarf virus
C
TMV
D
ct X174
Question 395
Chlorophyll-b is not present in     
A
green algae
B
bryophytes
C
Spiro gyra
D
blue-green algae
Question 396
The largest gland in the human body is:       
A
pancreas
B
brain
C
gall bladder
D
liver
Question 397
In man, artificial pace-maker is implanted due to defects in:    
A
SA node
B
AV node
C
Mitral valve
D
Purkinje fibres
Question 398
Sex chromosomes for the first time was discovered in which plant?     
A
Sphaerocarpus
B
Pisum sativum
C
Nurospora
D
Lathyrus odoratus
Question 399
Echolocation is. found in: ?    
A
bat
B
cat
C
dog
D
horse
Question 400
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 401
To maintain constant body temperature is called:       
A
homeothermic
B
poikilothermic
C
homozygous
D
heterozygous
Question 402
Secondary cell wall grows by:     
A
deamination
B
calcicole
C
apposition
D
none of these
Question 403
Jumping genes in maize were discovered by:     
A
Hugo de Vries
B
T. H. Morgan
C
Barbara McClintock
D
Mendel
Question 404
Biogeochemical cycle of which element has atmospheric phase:    
A
carbon
B
sodium
C
phosphorus
D
magnesium
Question 405
Maturation of sperm before penetration is called:       
A
spermatogenesis
B
spermiogenesis
C
capacitation
D
spermatid
Question 406
Phylogenetic system is based on:      
A
evolutionary and genetic character
B
reproductive characters
C
morphological characters
D
natural affinities
Question 407
Enzyme present in saliva is:     
A
maltase
B
ptyalin
C
sucrase
D
invertase
Question 408
Which among the following is the only vertebrate osmoconformer?    
A
Rabbit
B
Hagfish
C
Bird
D
None of these
Question 409
Cancer of prostate gland is caused due to the exposure to:       
A
lead oxide
B
cadmium oxide
C
potassium oxide
D
chlorine
Question 410
The supporting and nutritive cells found in the brain are:     
A
ependymal cells
B
microglia
C
astrocytes
D
oligodendrocytes
Question 411
Spores with chloroplast is present in:     
A
Selaginella
B
Equisetum
C
Puccinia
D
Rhizopus
Question 412
Which gland atrophies in adult?     
A
Pituitary
B
Thymus
C
Thyroid
D
Adrenal
Question 413
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 414
Calmodulin is a:   
A
chlorophyll binding protein
B
cadmium binding protein
C
calcium binding protein
D
carotene binding protein
Question 415
Pseudocoelom is not found in:     
A
Ascaris
B
Ancylostoma
C
Fasdola
D
None of these
Question 416
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 417
Hypothyroidism causes       
A
myxodema
B
cretinism
C
both (a) and (b)
D
exopthalmic goiter
Question 418
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 419
Which of the following required in translocation of food in plants?     
A
Xylem
B
Phloem
C
Sclerenchyma
D
Collenchyma ‘
Question 420
Chlorophyll-a is absent in which of the following photosynthetic or ganism?     
A
Cyanobacteria
B
Red algae
C
Brown algae
D
Bacteria
Question 421
Which is a symbiont inside human intestine?    
A
Streptococcus pneumoniae
B
Neisseria meningitidis
C
E. coil
D
Treponema pallidum
Question 422
Theory of pangenesis was proposed by:     
A
F. Redi
B
Darwin
C
Haeckel
D
Miller
Question 423
Butterfly belongs to:      
A
Homoptera
B
Procoptera
C
Hemiptera
D
Lepidoptera
Question 424
Kupifer cells are present in:    
A
liver
B
pancreas
C
small intestine
D
large intestine
Question 425
Natural pearl belongs to:     
A
Arthropoda
B
Protozoa
C
Mollusca
D
Echinodermata
Question 426
The largest variety of digestive enzymes is found in:       
A
carnivores
B
herbivores
C
omnivores
D
parasites
Question 427
Nissl’s granules are absent in:    
A
axon
B
cyton
C
dendrone
D
both (a) and (b)
Question 428
Which is not phagocytic?       
A
Monocyte
B
Lymphocyte
C
Mast-cell
D
Neutrophil
Question 429
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 430
In Limnaea shell coiling is due to:   
A
cytoplasmic inheritance
B
nuclear inheritance
C
recessive inheritance
D
none of the above
Question 431
Organs that have different embryonic origin but perform similar functions are    
A
homologous organs
B
analogous organs
C
vestigial organs
D
atavism
Question 432
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 433
Sea horse belongs to:     
A
Mammals
B
Amphibia
C
Ayes
D
Pisces
Question 434
Genes are present on:      
A
chromosomes
B
lamellae
C
plasma membrane
D
mesosomes
Question 435
Ultimate source of variation is:     
A
mutation
B
mitosis
C
meiosis
D
fertilization
Question 436
Activity of succinic dehydrogenase involves the following in TCA cycle:     
A
NAD
B
FAD
C
GDP
D
ATP
Question 437
Fungi in a forest ecosystem is:       
A
producer
B
decom poser
C
top consumer
D
autotroph
Question 438
Funaria and Marchantia differ from each other because Funaria posses:       
A
ventral canal cell
B
foot
C
calyptra
D
protonema
Question 439
The chromosome showing L-shaped structure by the presence of centromere is termed as:       
A
acentric
B
metacentric
C
sub-metacentric
D
telocentric
Question 440
DNAstrands:      
A
have quartenary structure like protein
B
are bonded by disulphide bonds
C
have some polarity
D
are antiparallel
Question 441
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 442
Cu is present in:     
A
plasmalemma
B
plastoquinone
C
plastocyanin
D
ferredoxin
Question 443
Which is a bioinsecticide?    
A
Cactoblastis cactorum
B
Anabaena
C
Bacillus thruingiensis
D
Rhizobium
Question 444
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 445
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 446
Which of the following connects glycolysis to Krebs cycle?    
A
Acetyl Co-A
B
Ribozyme
C
Cytochrome oxidase
D
N-acetyl glucosa mine
Question 447
Pat storing granules are     
A
elaloplast
B
amyloplast
C
aleuroplast
D
none of these
Question 448
The following cells cannot be grown under tissue culture conditions:     
A
hela cells
B
leucocytes
C
kidney cells
D
nerve cells
Question 449
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 450
The stem of Equisetum is rough due to:     
A
spines
B
silica
C
sclerids
D
fibres
Question 451
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 452
Leydig cells are found in:    
A
heart
B
lungs
C
spleen
D
testes
Question 453
Heavy metals are detoxified in plants by:       
A
abscisic acid
B
alleopathins
C
phytochelatins
D
phytoalexins
Question 454
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 455
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 456
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 457
Glenoid cavity is found in     
A
pelvic girdle
B
pectoral girdle
C
sternum
D
humerus
Question 458
For DNA structure, Nobel prize was given to:       
A
Macna Wilkins
B
Franklin
C
Pauly
D
Waston and Crick
Question 459
Hardy-Weinberg principle explains f      
A
genetic equilibrium
B
non-random mating
C
evolutionary force
D
all of the above
Question 460
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 461
Primary blood cells are formed in:    
A
plasma
B
bone marrow
C
liver
D
spleen
Question 462
Seedless water melons are obtained by:    
A
triploidy
B
gibberellin application
C
haploidy
D
vegetative propagation
Question 463
Meristematic tissues are:   
A
premature having ability of division
B
mature does not have ability of division
C
premature not having ability of division
D
complex differentiating in xylem, phloem and cambium
Question 464
Interferons are produced in response to:     
A
virus
B
bacteria
C
helminthes
D
malarial parasites
Question 465
What helps in f