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
The function of polymerase chain reaction (PCR) is       
A
translation
B
transduction
C
DNA amplification
D
none of the above
Question 2
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 3
Leydig cells are found in:    
A
heart
B
lungs
C
spleen
D
testes
Question 4
Which among the following is the only vertebrate osmoconformer?    
A
Rabbit
B
Hagfish
C
Bird
D
None of these
Question 5
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 6
Which is correct?   
A
Slime moulds are haploid
B
Protozoan lack cell wall
C
Dinoflagellates are immotile
D
Pellicle is absent in Euglena
Question 7
Enzyme present in saliva is:     
A
maltase
B
ptyalin
C
sucrase
D
invertase
Question 8
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 9
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 10
Which of the following is not derived from ectoderm?      
A
Inner ear
B
Middle ear
C
Optic nerve
D
Skin
Question 11
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 12
Penicillin was used in     
A
I world war
B
II world war
C
both (a) and (b)
D
none of these
Question 13
Which of the following controls the function of Sertoli cell?       
A
FSH
B
Estrogen
C
ACTH
D
Testosterone
Question 14
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 15
The stele found in monocot is:    
A
haplostele
B
atactostele
C
dictyostele
D
actinostele
Question 16
VLscum album grows on trees. This is an example of:     
A
symbiosis
B
parasitism
C
commensalism
D
predation
Question 17
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 18
The non-membranous organelles are:     
A
centrioles
B
ribosomes
C
nucleolus
D
all of these
Question 19
Reindeer moss is a:    
A
pteridophyta
B
bryophyta
C
lichen
D
gymnosperm
Question 20
Testosterone is secreted by    
A
Leydig cell
B
Sertolicell
C
spermatogenic cell
D
all of the above
Question 21
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 22
Activity of succinic dehydrogenase involves the following in TCA cycle:     
A
NAD
B
FAD
C
GDP
D
ATP
Question 23
Which was first photosynthetic organism?     
A
Green algae
B
Red algae
C
Cyanobacteria
D
None of these
Question 24
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 25
Primary blood cells are formed in:    
A
plasma
B
bone marrow
C
liver
D
spleen
Question 26
Cyanide resistant pathway is:      
A
anaerobic respiration
B
aerobic respiration
C
both (a) and (b)
D
none of the above
Question 27
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 28
The genes concerned with the production of cancer are called       
A
cancer genes
B
carinogenes
C
carcinomas
D
oncogenes
Question 29
Humus is present in:     
A
horizon-A
B
horizon-O
C
horizon-B
D
horizon-C
Question 30
Organs that have different embryonic origin but perform similar functions are    
A
homologous organs
B
analogous organs
C
vestigial organs
D
atavism
Question 31
Zygospore is    
A
give rise to zoospores on meiosis
B
equivalent to Ascus, Brasilia
C
dormant stage
D
give raise to asexual spore
Question 32
A codon is made up of:     
A
single nucleotide
B
two nucleotides
C
three nucleotides
D
four nucleotides
Question 33
Calmodulin is a:   
A
chlorophyll binding protein
B
cadmium binding protein
C
calcium binding protein
D
carotene binding protein
Question 34
Which of the following inhibits 02 release light phase?     
A
PMA
B
Zeatin
C
DCMU
D
None-of these
Question 35
Which of the following is connecting link between reptiles and birds?     
A
Archaeopteryx
B
Euglena
C
Neopilina
D
Latimeria
Question 36
3-PGA is first stable product ill    
A
carbon-reduction cycle
B
OAA
C
malic acid
D
PEP
Question 37
Predation and parasitism are which type of rnteractions:        
A
(+,+)
B
(+,O)
C
(-,-)
D
(+,-)
Question 38
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 39
Heterozygosity is most favoured in plants following:        
A
cleistogamy
B
autogamy
C
xenogamy
D
geitonogamy
Question 40
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 41
Knee joint is:       
A
cartilageneous
B
fibrous
C
gliding joint
D
synovial
Question 42
Fluid mosaic model was proposed by:    
A
Singer and Nicholson
B
Robertson
C
Danielli and Davson
D
Huxley
Question 43
Parasexuality was first discovered in:     
A
bacteria
B
virus
C
fungi
D
none of these
Question 44
The edible part of litchi is:    
A
aril
B
endocarp
C
mesocarp
D
none of these
Question 45
Multiplication of DNA is called:       
A
transcription
B
translation
C
replication
D
transduction
Question 46
Maximum productivity is found in:     
A
grassland
B
tropical rain forest
C
ocean
D
none of the above
Question 47
To maintain constant body temperature is called:       
A
homeothermic
B
poikilothermic
C
homozygous
D
heterozygous
Question 48
Rajaji national park is in:    
A
Karnataka
B
Rajasthan
C
UttarPradesh
D
Assam
Question 49
Cytokinins are formed in:       
A
roots
B
leaves
C
fruits
D
stems
Question 50
Angiosperms differ from gymnosperms in:   
A
seeds
B
fruits
C
male gametophyte
D
female gametophyte
Question 51
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 52
Salmon is:    
A
anadromous fish
B
catadromous fish
C
mollusca
D
insect
Question 53
Which is a bioinsecticide?    
A
Cactoblastis cactorum
B
Anabaena
C
Bacillus thruingiensis
D
Rhizobium
Question 54
Which is a symbiont inside human intestine?    
A
Streptococcus pneumoniae
B
Neisseria meningitidis
C
E. coil
D
Treponema pallidum
Question 55
The layer of cells that secrete enamel of tooth is:     
A
dentoblast
B
ameloblast
C
osteoblast
D
odontoblast
Question 56
Bacterial mutants requiring special nutrients are known as:     
A
prototrophs
B
autotrophs
C
heterotrophs
D
auxotrophs
Question 57
 Tapetum is:       
A
protective
B
reproductive
C
nutritive
D
respiratory
Question 58
Vit. B12 is available to ruminants by:      
A
plants
B
microorganisms in caecum
C
animals
D
all of the above
Question 59
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 60
Hybrid vigour is due to:   
A
heterosis
B
epistasis
C
complementary genes
D
supplementary genes
Question 61
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 62
Food is translocated in plants through:    
A
xylem
B
phloem
C
cambium
D
cork
Question 63
Water bloom’ is generally caused by:     
A
green algae
B
blue-green algae
C
bacteria
D
Hydrilla
Question 64
Vital capacity of lung is      
A
TV+IRV+ERV
B
TV+IRV+RV
C
TV+ERV
D
IRV+ERV
Question 65
Corpus luteum secretes     
A
progesterone and estrogen
B
LH
C
only progesterone
D
progesterone and LH
Question 66
Pick out the odd one:      
A
Aniielida
B
Reptilia
C
lnsecta
D
Taenia
Question 67
O2evolution is directly associated with:    
A
PS-I
B
PS-Il
C
phytochrome
D
phycocyanin
Question 68
Who gave theory about embryonic evolution?     
A
Darwin
B
Lamarck
C
Haeckel
D
Dabzansky
Question 69
Chromosomes can be seen best during:    
A
prophase
B
metaphase
C
anaphase
D
telophase
Question 70
Maturation of sperm before penetration is called:       
A
spermatogenesis
B
spermiogenesis
C
capacitation
D
spermatid
Question 71
Black rust of wheat is caused by:     
A
Pucdnia graminis
B
Ustilago
C
Pythium
D
None of these
Question 72
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 73
The study of reptiles is called:     
A
Herpetology
B
Dermatology
C
Angiology
D
Parazoology
Question 74
The organism which is used for gene transfer in higher organisms is?    
A
Agrobacterium tumefaciens
B
E.coIi
C
Acetobacter
D
Bacillus thuringiensis
Question 75
Soil erosion is prevented by:    
A
deforestation
B
afforestation
C
reduction of CFCs production
D
use of CNG in all transports
Question 76
Tendons and ligaments are specialized types of:       
A
nervous tissue
B
muscular tissue
C
epithelial tissue
D
fibrous connective tissue
Question 77
Pseudostratif led epithelium is found in:       
A
pharynx
B
trachea
C
testis
D
epidermis
Question 78
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 79
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 80
Hardy-Weinberg principle explains f      
A
genetic equilibrium
B
non-random mating
C
evolutionary force
D
all of the above
Question 81
Secondary metabolite is:     
A
sugar
B
glucose
C
antibiotics
D
all of these
Question 82
Superiority of hybrid over parents is:     
A
introduction
B
selection
C
hybridized progeny
D
hybrid vigour
Question 83
 Which of the following is initiating codon?     
A
AUG
B
AUU
C
UAG
D
None of these
Question 84
DNA synthesis occurs in:     
A
prometaphase
B
prophase
C
interphase
D
telophase
Question 85
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 86
Cotton is:    
A
epidermal tissue system
B
vascular tissue system
C
meristematic tissue system
D
ground tissue-system
Question 87
Phycomycetes is a class in kingdom        
A
Protista
B
Fungi
C
Plantae
D
Animala
Question 88
Pancreatic secretion and gall bladder contraction are stimulated by:      
A
gastrin
B
enterocrinin
C
enterogasterone
D
cholesystokinin
Question 89
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 90
Which disaccharide has different linkage?       
A
Maltose
B
Starch
C
Sucrose
D
Lactose
Question 91
Funaria and Marchantia differ from each other because Funaria posses:       
A
ventral canal cell
B
foot
C
calyptra
D
protonema
Question 92
Pat storing granules are     
A
elaloplast
B
amyloplast
C
aleuroplast
D
none of these
Question 93
Node of Ranvier is found in:    
A
right auricle
B
muscle bundles
C
dendrite
D
axon
Question 94
Opium is extracted from:   
A
Atropa belladona
B
Papaver somniferum
C
Vinca rosea
D
Azadirachta indica
Question 95
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 96
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 97
Enzymes of electron transport system are present in:    
A
inner mitochondrial membrane
B
matrix
C
intermembranous space
D
endoplasmic reticulum
Question 98
Organisms found in extreme temperature are:       
A
cyanobacteria
B
archaebacteria
C
fungi
D
eubacteria
Question 99
The habitat of a species along with its function is:    
A
home range
B
tersitory
C
boundary
D
niche
Question 100
Phylogenetic system was given by     
A
Engler and Prantl
B
Pliny
C
John Ray
D
R.H. Whittaker
Question 101
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 102
Cyanide resistant respiration is characteristic of:     
A
viruses
B
bacteria
C
plants
D
animals
Question 103
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 104
First stable product of €3 pathway is:      
A
Oxalo-acetic acid
B
3 phosphoglyceric acid
C
RuBP
D
Phosphoenol pyruvate
Question 105
Endoplasmic reticulum is studied with:     
A
ribosomes
B
lysosomes
C
glyoxisomes
D
microsomes
Question 106
Which plant hormone promotes seed, bud dormancy and causes stomata I closure?      
A
IAA
B
Abscisic acid
C
GAi
D
Cytokinin
Question 107
Sea horse belongs to:     
A
Mammals
B
Amphibia
C
Ayes
D
Pisces
Question 108
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 109
Ribosomes that occur exclusively in mitochondria is:       
A
705
B
555
C
30S
D
SOS
Question 110
Mendelian recombinations are due to:    
A
linkage
B
independent assortment of genes
C
mutation
D
dominant characters
Question 111
The formation of egg and sperm is affected by:       
A
LH
B
MH
C
TSH
D
FSH
Question 112
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 113
Chemofusion and dectrofusion are characteristic of:    
A
mutations
B
cloning
C
protoplast fusion
D
eugenics
Question 114
Hassal’s bodies/corpuscles:     
A
adrenal medula
B
thyroid
C
thymus
D
parathyroid
Question 115
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 116
Chromosomes that determine male sex in Melandrium plant is:     
A
Y chromosome
B
X chromosome
C
XX chromosome
D
None of the above
Question 117
DNAstrands:      
A
have quartenary structure like protein
B
are bonded by disulphide bonds
C
have some polarity
D
are antiparallel
Question 118
In which phylum larva/young one is bilaterally symmetrical but adult one is radially symmetrical?     
A
Echinodermata
B
Porifera
C
Arthropoda
D
Mollusca
Question 119
Physiological heterospory is seen in:    
A
Ch!amydomonas
B
Rhizopus
C
Se/a ginella
D
Lycopodium
Question 120
Geotropic response is perceived by:      
A
root tip
B
root hairs
C
elongating cells
D
mature root cells
Question 121
Jumping genes in maize were discovered by:     
A
Hugo de Vries
B
T. H. Morgan
C
Barbara McClintock
D
Mendel
Question 122
Bacteria do not have:      
A
ribosome
B
protein synthesizing apparatus
C
mitochondria
D
cell wall
Question 123
At which stage of mitosis chromatids separated and passes to different poles?     
A
Prophase
B
Metaphase
C
Anaphase
D
Telophase
Question 124
Prolonged deficiency of thiamine in human diet may lead to:     
A
pellagra
B
ben-ben
C
anaemia
D
haemorrhage
Question 125
Theory of catastropism was supported by:       
A
Luis Pasteur
B
A. I. Oparin
C
Cuvier
D
Haldane
Question 126
The largest gland in the human body is:       
A
pancreas
B
brain
C
gall bladder
D
liver
Question 127
Vernalisation is response due to:   
A
high temperature
B
optimum temperature
C
low temperature
D
none of the above
Question 128
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 129
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 130
Phytotron is:   
A
a controlled condition chamber for tissue culture
B
leaf culture process
C
special culture of plants
D
root culture process
Question 131
Which of the following is a basic amino acid?     
A
Leucine
B
Lysine
C
Methionine
D
Aspartic acid
Question 132
Sex chromosomes for the first time was discovered in which plant?     
A
Sphaerocarpus
B
Pisum sativum
C
Nurospora
D
Lathyrus odoratus
Question 133
Mycorrhiza is found in     
A
oligotrophic soil
B
eutrophic soil
C
both (a) and (b)
D
none of the above
Question 134
Osphradium ofPlia globosa is:     
A
photoreceptor
B
thermoreceptor
C
chemoreceptor
D
tangoreceptor
Question 135
Ribosome mainly has:    
A
DNA
B
RNA
C
carbohydrate
D
none of these
Question 136
Butterfly belongs to:      
A
Homoptera
B
Procoptera
C
Hemiptera
D
Lepidoptera
Question 137
Ducts of Bellini are present in:     
A
medulla oblongata
B
liver
C
kidney
D
intestine
Question 138
Theory of Pangenesis was proposed by:     
A
Lamarck
B
Weismann
C
Hugo de Vries
D
Darwin
Question 139
Plants require sulphur for:    
A
DNA replication
B
protein synthesis
C
synthesis of glucose
D
formation of ATP
Question 140
Which gland atrophies in adult?     
A
Pituitary
B
Thymus
C
Thyroid
D
Adrenal
Question 141
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 142
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 143
Binary fission is a mode of: ?   
A
micropropagation
B
vegetative propagation
C
macropropagation
D
sexual reproduction
Question 144
Who coined the term ‘cell?     
A
Purkinje
B
Robert Brown
C
Robert Hooke
D
Hugo von MohI
Question 145
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 146
Unwinding of DNA is done by:      
A
primase
B
exonuclease
C
helicase
D
ligase
Question 147
Which of the following is vestigial organ in human?       
A
coccyx
B
splint bone
C
wings
D
pelvic girdle
Question 148
Damaged sieve tubes are sealed by deposition of:       
A
pectin
B
callus
C
suberin
D
lignin
Question 149
Protein in silk thread is:     
A
fibroin
B
keratin
C
albumin
D
globulin
Question 150
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 151
ACTH is secreted by:    
A
thyroid gland
B
thymus gland
C
pituitary gland
D
isletsof Langerhans
Question 152
Species living in a restricted geographical areais:       
A
sympatric
B
allopatric
C
sibling
D
keystone
Question 153
Cells having secretory function have abundant:    
A
lysosomes
B
endoplasmic reticulum
C
dictyosomes
D
osteosomes
Question 154
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 155
What is not seen during mitosis in somatic cells?      
A
Spindle fibres
B
Chromosome movement
C
Disappearance of nucleolus
D
Synapsis
Question 156
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 157
Which of the following connects glycolysis to Krebs cycle?    
A
Acetyl Co-A
B
Ribozyme
C
Cytochrome oxidase
D
N-acetyl glucosa mine
Question 158
A plant which is cultivated by tissue culture technique is:     
A
Citrus
B
Apple
C
Pear
D
Guava
Question 159
Triticum monococcum is:    
A
diploid
B
triploid
C
tetraploid
D
hexaploid
Question 160
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 161
Spores with chloroplast is present in:     
A
Selaginella
B
Equisetum
C
Puccinia
D
Rhizopus
Question 162
Menstrual How occurs due to lack of     
A
progesterone
B
FSH
C
oxytocin
D
vasopressin
Question 163
Eggs of cockroach are:     
A
alecithal
B
microledthal
C
telolecithal
D
centrolecithal
Question 164
Chlorophyll-b is not present in     
A
green algae
B
bryophytes
C
Spiro gyra
D
blue-green algae
Question 165
Bt toxin obtained from    
A
prokaryotes
B
eukaryotes
C
both (a) and (b)
D
none of these
Question 166
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 167
Agranal chioroplast are found in:    
A
Bryophytes
B
Gymnospenns
C
Green algae
D
Angiosperms
Question 168
In eukaryotes basic structural unit made of histone and DNA:       
A
nucleosome
B
nucleolus
C
chromosome
D
lysosome
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
Quinine is obtained from:    
A
bark of Cinchona
B
root of Cinchona
C
wood of Cinchona
D
leaves of Cinchona
Question 171
For DNA structure, Nobel prize was given to:       
A
Macna Wilkins
B
Franklin
C
Pauly
D
Waston and Crick
Question 172
Heavy metals are detoxified in plants by:       
A
abscisic acid
B
alleopathins
C
phytochelatins
D
phytoalexins
Question 173
Histamine is secreted by:    
A
goblet cell
B
nerve cell
C
Kupffer cell
D
mast cell
Question 174
Cytokinin synthesis is maximum in:       
A
leaves
B
roots
C
fruits
D
shoot tip
Question 175
Universal blood recipient is:    
A
blood group-O
B
blood group-AB
C
blood group-A
D
blood group-B
Question 176
Kupifer cells are present in:    
A
liver
B
pancreas
C
small intestine
D
large intestine
Question 177
Which of the following is a living fossil?     
A
Sphenodon
B
Heloderma
C
Rabbit
D
Frog
Question 178
The pH of blood is:     
A
between 7-8
B
between 2-4
C
between 12-14
D
between 2-5
Question 179
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 180
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 181
Overlapping region between two ecosystems:       
A
biome
B
ecotone
C
niche
D
photiczone
Question 182
Ginseng is an important drug of:     
A
America
B
Egypt
C
lndia
D
China
Question 183
The infected stage of malarial parasite is:   
A
sporozoites stage
B
schizozoites stage
C
merozoites stage
D
metacryptozoites stage
Question 184
Smallest flower is:    
A
Woiffia microspermia
B
Salvinia
C
Pistfa
D
Lemna
Question 185
In plants translocation occurs in the form of:       
A
starch
B
sucrose
C
glucose
D
fructose
Question 186
Interferons are produced in response to:     
A
virus
B
bacteria
C
helminthes
D
malarial parasites
Question 187
In osmosis, there is movement of:    
A
solute only
B
solvent only
C
both (a) and (b)
D
neither solute nor solvent
Question 188
Juicy part of litchi is an outgrowth of:      
A
nucellus
B
micropyle end
C
chalazal end
D
outer integument
Question 189
Eutrophication is seen in:     
A
saline soil
B
agricultural land near thermal plant
C
lake
D
mountain
Question 190
Codes of rn-RN A and proteins are:    
A
coplanar
B
colinear
C
nonlinear
D
irregular
Question 191
Inclusive fitness theory is proposed by:     
A
Darwin
B
Lamarck
C
Weismann
D
Hamilton
Question 192
Actinomycetes which is a symbiotic nitrogen fixing organism in many plants.:       
A
Streptomyces
B
Anabaena
C
Frankia
D
Rhizobium
Question 193
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 194
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 195
Synaptic vesicle is found in    
A
pre synaptic neuron
B
post synaptic neuron
C
synaptic cleft.
D
none of the above
Question 196
Pyruvic acid is the end product of:      
A
Krebs cycle
B
electron transport system
C
photosynthesis
D
glycolysis
Question 197
In Limnaea shell coiling is due to:   
A
cytoplasmic inheritance
B
nuclear inheritance
C
recessive inheritance
D
none of the above
Question 198
Integumentary nephridia are also called:   
A
enteronephric
B
exonephric
C
sometimes enteronephric and sometimes exonephric
D
both (a) and (b)
Question 199
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 200
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 201
Gibberellin was first reported from:     
A
algae
B
fungus
C
bacteria
D
bryophyte
Question 202
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 203
Nerve cells are the part of:    
A
epithelial tissue
B
connective tissue
C
muscles tissue
D
nervous tissue
Question 204
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 205
In genetic engineering, the terms vector is applied for:    
A
plasmid
B
sources of DNA
C
cell which receives
D
virus
Question 206
Which of the following is a monocarpic plant?     
A
Bambusa
B
Sesamum
C
Lauandual
D
Pin us
Question 207
1:2:1 phenotypic and genotypic ratio is found in:    
A
complementary genes
B
blending inheritance
C
multiple alleles
D
pseudo alleles
Question 208
Overlapping region between two ecosystems:       
A
biome
B
ecotone
C
niche
D
photiczone
Question 209
Energy enters in a food chain through:     
A
producers
B
primary consumers
C
secondary consumers
D
tertiary consumers
Question 210
Large unit of land having different types of plants and animals        
A
uniform vegetation
B
biome
C
ecosystem
D
niche
Question 211
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 212
Formation of glucose from lipids is:    
A
gluconeogenesis
B
glycogenolysis
C
glycogenesis
D
none of these
Question 213
Protein packaging is done by:    
A
Golgi apparatus
B
ribosomes
C
end oplasmic reticulum
D
nucleolus
Question 214
Book lungs are respiratory organs of:     
A
Mollusca
B
Mammals
C
Arachnida
D
Annelida
Question 215
Lactic acid is formed in     
A
fermentation
B
glycolysis
C
HMP pathways
D
none of these
Question 216
One gene one enzyme hypothesis was given by:     
A
Jacob and Monod
B
McClintock
C
Meselson and Stahl
D
Beadle and Tatum
Question 217
2n - 2 is known as:    
A
monosomic
B
trisomic
C
nullisomy
D
polyploidy
Question 218
Smallest part of DNA, which takes part in crossing over is called:    
A
gene
B
allele
C
recon
D
none of these
Question 219
Which is not a feature of annelids?     
A
Metameric segmentation
B
Nephridia
C
Pseudocoelom
D
Clitellum
Question 220
Enzyme having different molecular arrangement but similar functions, is:     
A
isoenzyme
B
holoenzyme
C
apoenzyme
D
coenzyme
Question 221
Which of the following is called as ‘Age of Reptiles’?       
A
Coenozoic era
B
Azoic era
C
Mesozoic era
D
Precambrian era
Question 222
Which of the following required in translocation of food in plants?     
A
Xylem
B
Phloem
C
Sclerenchyma
D
Collenchyma ‘
Question 223
Metamorphosis in frog is hastened by:       
A
thyroxine
B
insulin
C
glucagon
D
adrenalin
Question 224
Which is not phagocytic?       
A
Monocyte
B
Lymphocyte
C
Mast-cell
D
Neutrophil
Question 225
When Ronald Ross found malaria parasite infection, in mosquito?     
A
1897
B
1850
C
1835
D
1859
Question 226
Niacin deficiency leads to:    
A
pellagra
B
osteomalacia
C
marasmus
D
scurvy
Question 227
Ethylene is involved in:   
A
aerobic respiration
B
anaerobic respiration
C
climacteric respiration
D
fermentation
Question 228
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 229
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 230
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 231
Which is a unit of evolution?     
A
Cell
B
Individual
C
Population
D
Species
Question 232
Which part of brain control intellectual ability?     
A
Frontal lobe
B
Parietal lobe
C
Temporal lobe
D
Occipetal lobe
Question 233
Which of the following is an endangered animal?      
A
Hanuman monkey
B
Langur
C
Antelope
D
Lion tailed maca que
Question 234
Use and disuse’ theory was proposed by:     
A
Lamarck
B
Darwin
C
Hugo de Vries
D
Maithus
Question 235
Enzyme found functional in lysosome is     
A
acid phosphatase
B
basic phosphatase
C
oxido reductase
D
liases \
Question 236
A gene which gives multiple phenotypic effects    
A
complementary genes
B
lethal genes
C
pleiotropic genes
D
holandric genes
Question 237
Which of the following is not a function of liver:    
A
Production of bile
B
Production of insulin
C
Glycogen storage
D
Detoxification
Question 238
National Botanical Research Institute is located at:     
A
New Delhi
B
Mumbai
C
Lucknow
D
Dehradoon
Question 239
Relationship between different organisms can be best described by:      
A
blood web
B
pyramid of energy
C
pyramid of mass
D
Eltonian pyramid
Question 240
In which of the following stage chromosomes are arranged at equatorial plate?     
A
Anaphase
B
Metaphase
C
Prophase
D
Telophase
Question 241
Which one is a sex linked disease?     
A
Colourblindness
B
Haemophilia
C
Syphilis
D
Both (a) and (b)
Question 242
Chlorophyll-a is absent in which of the following photosynthetic or ganism?     
A
Cyanobacteria
B
Red algae
C
Brown algae
D
Bacteria
Question 243
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 244
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 245
From which of the following plants a medicine for respiratory disorders is obtained ?     
A
Ephedra
B
Eucalyptus
C
Cannabis
D
Saccharum
Question 246
Deltoid ridge is present in:    
A
femur
B
humerus
C
tibia
D
fibula
Question 247
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 248
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 249
Healing of wound in plants takes place by at activity of:    
A
ground tissue
B
callus deposition
C
secondary meristem
D
permanent tissue
Question 250
The taste receptors of cockroach are:     
A
compounds eyes
B
companiform sensillae
C
palps of maxillary and labium
D
tactile hairs
Question 251
Bilaterally symmetrical but acoelomate animal is:     
A
liver fluke
B
jelly fish
C
round worms
D
crab
Question 252
Lam pbrush chromosomes are seen in:    
A
interphase
B
zygotene
C
diplotene
D
metaphase
Question 253
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 254
 Haversian canals are found in:   
A
internal ear of mammal
B
external ear of mammal
C
long bone of rabbit
D
spinal chord
Question 255
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 256
The shape of eye lens is changed by:       
A
pupil
B
iris
C
optic nerve
D
ciliary muscles
Question 257
Vernalization is done at:     
A
lower temperature
B
low light intensity
C
higher temperature
D
high light intensity
Question 258
Cytokinins are formed in:     
A
roots
B
leaves
C
fruits
D
stems
Question 259
Sinus venosus is present in:   
A
birds only
B
birds and mammals
C
reptiles and birds
D
fishes, amphibians and reptiles
Question 260
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 261
 Phytotoxins are secreted by plants in response to fungal reaction. These compounds ax generally:       
A
proteins
B
glycoproteins
C
phenolic compounds
D
lipids
Question 262
Procambium forms:   
A
cork cam bium
B
vascular tissue
C
vascular cambium
D
intercalary meristem
Question 263
Which of the following is a nitrogen fixing organism?     
A
BGA
B
Rhizobium
C
Both (a) and (b)
D
Aspergillus
Question 264
Polyembryony is shown by:    
A
Selaginella
B
Pinus
C
Man gifera
D
None of these
Question 265
In which the pneumatophores are found?     
A
Tinospora
B
Pinus
C
Rhizophora
D
None of these
Question 266
Which of the following is balancing organ?     
A
Organ of Corti
B
Cochlea
C
Vestibular region
D
All of these
Question 267
Fungi differ from other kingdom in being:    
A
unicellular
B
unicellular, consumers
C
multicellular, decomposers
D
multicellular, consumer
Question 268
Primitive man was originated during:    
A
Miocene
B
Holocene
C
Pleistocene
D
Pliocene
Question 269
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 270
Examples of regional pollution are:    
A
acid rain
B
smog
C
both (a) and (b)
D
none of the above
Question 271
Which of the following is not secreted by anterior pituitary?      
A
Prolactin
B
FSH
C
Growth hormone
D
ADH
Question 272
Postganglionic nerve fibres of sympathetic system are:     
A
adrenergic
B
cholinergic
C
both (a) and (b)
D
none of these
Question 273
Cyanobacteria are:    
A
mosses which attack bacteria
B
bacteria which attack Cyanophyceae
C
autotrophic organism with phycocyanin
D
none of these
Question 274
The chromosome showing L-shaped structure by the presence of centromere is termed as:       
A
acentric
B
metacentric
C
sub-metacentric
D
telocentric
Question 275
Glenoid cavity is found in     
A
pelvic girdle
B
pectoral girdle
C
sternum
D
humerus
Question 276
Phylogenetic system is based on:      
A
evolutionary and genetic character
B
reproductive characters
C
morphological characters
D
natural affinities
Question 277
Ozone hole results in:   
A
UV radiation reaches the earth
B
cataract
C
increase in skin cancer
D
all of the above
Question 278
Acetylcholine helps in:    
A
synaptic transmission
B
membrane permeability
C
synaptic delay
D
none of the above
Question 279
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 280
Jacket of fern antheridium is composed of:    
A
2 cells
B
3 cells
C
4 cells
D
5 cells
Question 281
Study of periodical changes in plants in relation to seasonal changes       
A
Physiognomy
B
Phycology
C
Phenology
D
Photoperiodism
Question 282
Sporangia bearing leaves in pteridophytes are called:       
A
ramenta
B
son
C
sporophylls
D
indusium
Question 283
The following cells cannot be grown under tissue culture conditions:     
A
hela cells
B
leucocytes
C
kidney cells
D
nerve cells
Question 284
 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 285
Connecting link between Annelida and Mollusca is    
A
Neopilina
B
Nautilus
C
glochidium larva
D
veliger larva
Question 286
Cilia of gills of bivalve molluscs help in:     
A
feeding
B
digestion
C
reproduction
D
excretion
Question 287
Formation of RNA from DNA is known as:      
A
transcription
B
translation
C
replication
D
recombination
Question 288
Action of lysozyme is       
A
physiological
B
anatomical
C
morphological
D
none of these
Question 289
Secondary cell wall grows by:     
A
deamination
B
calcicole
C
apposition
D
none of these
Question 290
Coverstone of theory of Darwin was:    
A
natural selection
B
inheritance of acquired characters
C
omnis cellula e cellula
D
higher productivity
Question 291
The movement of pollen tube is called:       
A
chemotropism
B
thermotaxis
C
thermonastic
D
hydrotropism
Question 292
Which of the following plant hormone if extracted from fungus?     
A
Auxin
B
Gibberellin
C
Cytokinin
D
2, 4-D
Question 293
Pigment present in cyanobacteria is:    
A
r-phycocyanin
B
r-phycoerythrin
C
c-phycocyanin
D
anthocyanin
Question 294
Veliger larva is found in the phylum:    
A
Mollusca
B
Echinodermata
C
Arthropoda
D
Cnidaria
Question 295
Haematuria means.      
A
RBC in the urine
B
WBC in the urine
C
both (a) and (b)
D
none of the above
Question 296
Nissl’s granules are present in:    
A
RBC
B
WBC
C
both (a) and (b)
D
nerve cells
Question 297
To remove seed dormancy by mechanically removing the seed coat, is called    
A
stratification
B
scarification
C
vernalization
D
photoperiodism
Question 298
Biogeochemical cycle of which element has atmospheric phase:    
A
carbon
B
sodium
C
phosphorus
D
magnesium
Question 299
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 300
Which of the following organism is pseudocoelomate?.    
A
Hookworm
B
Liver fluke
C
Jellyfish
D
Leech
Question 301
Linkage group in E. coil is/are     
A
4
B
2
C
1
D
5
Question 302
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 303
Fungi lack:    
A
mitochondria
B
ribosomes
C
chloroplast
D
endoplasmic reticulum
Question 304
Which of the following is concerned with CO2 fixation ?     
A
Krebs cycle
B
Calvin cycle
C
Omithine cycle
D
Glycolysls
Question 305
Maximum diversity is found in which phylum?    
A
Chordata
B
Arthropoda
C
Protozoa
D
Annelida
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
In man, artificial pace-maker is implanted due to defects in:    
A
SA node
B
AV node
C
Mitral valve
D
Purkinje fibres
Question 308
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 309
Mode of nutrition in Trypanosoma is:       
A
saprozoic
B
parasitic
C
autotropic
D
phototropic
Question 310
Which of the following mineral deficiency will cause death of stem and root tips?       
A
)Mo
B
Ca
C
S
D
Fe
Question 311
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 312
Stratification is seen in     
A
Tundra
B
Tropical forest
C
Temperate forest
D
Desert
Question 313
Statoliths are involved in:    
A
phototropism
B
hydrotropism
C
chemotropism
D
gravitropism
Question 314
Echolocation is. found in: ?    
A
bat
B
cat
C
dog
D
horse
Question 315
Chronical disturbance in hormone secretion of thyroid gland causes:    
A
goitre
B
diabetes
C
Addison’s disease
D
colourblindness
Question 316
 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 317
500 mL of 0.1 mol HCI has pH       
A
1
B
13
C
2
D
0.1
Question 318
Tendons and ligaments are:    
A
epithelial tissue
B
fibrous connective tissue
C
nerve tissue
D
muscular tissue
Question 319
The instrument by which B.P. of man is determined:   
A
sphygmomanometer
B
B.P. meter
C
altrasound
D
stethoscope
Question 320
During protein denaturation which of the following is disrupted?     
A
2D structure
B
3D structure
C
Peptide bond
D
AA sequence ‘
Question 321
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 322
The gene interaction when one gene masks the effect:    
A
complementary gene action
B
supplementary gene action
C
duplicate gene action
D
epistasis
Question 323
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 324
Scorpion belongs to a class to which one of the following also belong?     
A
Ticks
B
Crabs
C
Branicles
D
Cockroaches
Question 325
Pseudocoelomic organisms belong to:     
A
Arthropoda
B
Annelida
C
Mollusca
D
Aschelminthes
Question 326
Ethylene is used for:    
A
decrease the senescence
B
increase the height of stem
C
ripening of fruits
D
prevention of leaf fall
Question 327
Solenocytes are used for:    
A
elimination of nitrogenous excretory wastes
B
respiration
C
digestion
D
all of the above
Question 328
Which of the following organism is useful in degrading organic pollutants:     
A
Nitrosomonas
B
Chiamydomonas
C
Actinomycetes
D
Pseudomonas
Question 329
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 330
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 331
Oblique ovary is found in family:    
A
Brassicaceae
B
Compositae
C
Leguminosae
D
Solanaceae
Question 332
Bone marrow does not occur in:     
A
amphibians
B
birds
C
reptilia
D
apes
Question 333
Potato is native to:     
A
South America
B
North America
C
South East
D
Australia
Question 334
Maximum noise permissible during day time in residential areas:        
A
75dB
B
55dB
C
65dB
D
45dB
Question 335
In ecotone some species become abundant:       
A
sibling species
B
endemic species
C
rare species
D
edge species
Question 336
The heartbeat of which animal is myogenic in nature?     
A
Cockroach
B
Leech
C
Elephant
D
All of the above
Question 337
Which of the phylum has none of fresh water form?    
A
Echinodermata
B
Mollusca
C
Chordata
D
Porifera
Question 338
Field capacity is associated with:   
A
capillary, hygroscopic, water vapour combined
B
capillary only
C
gravitational only
D
gravitational as well as
Question 339
Cu is present in:     
A
plasmalemma
B
plastoquinone
C
plastocyanin
D
ferredoxin
Question 340
The supporting and nutritive cells found in the brain are:     
A
ependymal cells
B
microglia
C
astrocytes
D
oligodendrocytes
Question 341
In drumstick the seeds are dispersed by:   
A
water
B
animals
C
wind
D
explosive mechanism
Question 342
Citric acid is industrially best produced by:    
A
Streptococcus lactis
B
Aspergillus niger
C
Penicillium purpurogenom
D
Lactobacillus debreukil
Question 343
Chagas disease is caused by;      
A
Trypanosoma gambiense
B
Plasmodium sp.
C
Tiypanosoma cruzi
D
Treponema pallidum
Question 344
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 345
Which of the following animals is mostly used in genetics experiments?     
A
Butterfly
B
Fruitfly
C
Housefly
D
Dragonfly
Question 346
Which one of the following is common in plant and animal ?       
A
Mitochondria
B
Tonoplast
C
Centriole
D
None of these
Question 347
Compositae is also called:     
A
Asteraceae
B
Myrtaceae
C
Fabaceae
D
Zingiberaceae
Question 348
Which of the following is a viral disease?     
A
Typhoid
B
Polio
C
T.B.
D
Leprosy
Question 349
Stop codons are:       
A
AUG, GUG
B
UAA, UGA, UAG
C
UAC, UGG
D
AGU, AGA, UAC
Question 350
Binomial nomenclature was given by:    
A
Aristotle
B
Hutchinson
C
Julian Huxley
D
Linnaeus
Question 351
Who first conducted experiment on evolution to prove biochemical origin of life?     
A
MiIler and Urey
B
Darwin
C
Lamarck
D
Weismann
Question 352
Ontogeny recapitulates phylogeny. This is:   
A
Pauling law
B
Hardy Weinberg law
C
Biogenetic law
D
Thomas law
Question 353
Fungi in a forest ecosystem is:       
A
producer
B
decom poser
C
top consumer
D
autotroph
Question 354
Which have no specific organ for respiration but respire?      
A
Rabbit
B
Cockroach
C
Earthworm
D
Frog
Question 355
 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 356
Nissl’s granules are absent in:    
A
axon
B
cyton
C
dendrone
D
both (a) and (b)
Question 357
What helps in flowering?    
A
Cytochrome
B
ABA
C
Phytochrome
D
Ethylene
Question 358
Biological species concept emphasizes on:   
A
geographical isolation
B
reproductive isolation
C
physiological isolation
D
none of the above
Question 359
Pseudocoelom is not found in:     
A
Ascaris
B
Ancylostoma
C
Fasdola
D
None of these
Question 360
The mutation (mechanism of origin of variations) was suggest by:     
A
Mendel
B
Darwin
C
Lamarck
D
de Vries
Question 361
Life span of RBC is:       
A
50 days
B
70 days
C
120 days
D
220 days
Question 362
The stem of Equisetum is rough due to:     
A
spines
B
silica
C
sclerids
D
fibres
Question 363
The conversion of NO3 to N2 is called:       
A
nitrification
B
denitrification
C
ammonification
D
nitrogen fixation
Question 364
ELISA test is used for detection of:     
A
antibodies
B
viral disease
C
AIDS
D
all of these
Question 365
The function of peroxisomes is:    
A
H202 destruction
B
conversion of fat to carbohyd rates
C
detoxification of heavy metals
D
oxidative phosphorylation
Question 366
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 367
Maximum photosynthetic activity takes place in:    
A
red light
B
orange light
C
green light
D
yellow light
Question 368
Ureotelic organisms:      
A
do not have urease
B
do not excrete urea
C
cannot form uric acid
D
live in water only
Question 369
Both mimic and model are harmful to the predator;      
A
Batesian mimicry
B
warning mimicry
C
concealing mimicry
D
Mullerian mimicry
Question 370
Secondary host of Schistosoma is:    
A
Hydra
B
Euglena
C
Snail
D
Pheretima
Question 371
Mouth parts of housefly are:    
A
siphoning type
B
sponging type
C
biting and chewing
D
piercing and sucking
Question 372
Hematology is the study of:     
A
bone
B
blood
C
cartilage
D
nerves
Question 373
Decarboxylation is not involved in:   
A
electron transport system
B
C4 cycle
C
Krebs cycle
D
alcoholic fermentation
Question 374
The largest variety of digestive enzymes is found in:       
A
carnivores
B
herbivores
C
omnivores
D
parasites
Question 375
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 376
During lneiosis crossing over occur between which part of homologous chromosome?   
A
Sister chromatids
B
Nonsister chromatids
C
Genes
D
Alleles
Question 377
Resolving power of scanning electron microscope is     
A
0.001 nm
B
0.01 nm
C
20 nm
D
0.0001
Question 378
National Botanical Institute is situated at     
A
Lucknow
B
Kolkotta
C
Mumbai
D
Chennai
Question 379
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 380
Pancreas is absent in which group of vertebrates?       
A
Reptiles
B
Cyclostomates
C
Birds
D
Mammals
Question 381
Weed killers generally have properties much like that of:    
A
hormone
B
carbohydrate
C
enzymes
D
all of these
Question 382
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 383
Mushroom belongs to:    
A
Ascomycetes
B
Basidiomycetes
C
Phycomycetes
D
Zygomycetes
Question 384
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 385
Progesterone pill helps in preventias pregnancy by not allowing:     
A
ova formation
B
fertilization
C
implantation
D
none of these
Question 386
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 387
Single membrane bound organelles are:    
A
lysosome
B
sphaerosome
C
glyoxysome
D
all of these
Question 388
Ultimate source of variation is:     
A
mutation
B
mitosis
C
meiosis
D
fertilization
Question 389
Apnoea is:   
A
absence of breathing
B
decreased ventilation
C
increased ventilation
D
laboured breathing
Question 390
The function of glyoxysome is:      
A
protein metabolism
B
carbohydrate metabolism
C
fat metabolism
D
protein synthesis
Question 391
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 392
Polytene chromosomes are found in:       
A
salivary gland
B
oocytes
C
green glands
D
none of these
Question 393
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 394
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 395
The wall of bacteria consists of:   
A
N-acetyl glucosamine
B
N-acetyl muramic acid
C
both (a) and (b)
D
cellulose
Question 396
Theory of pangenesis was proposed by:     
A
F. Redi
B
Darwin
C
Haeckel
D
Miller
Question 397
Which of the following is a component of electron transport chain in mitochondria ?   
A
Phytochrome
B
Cytochrome oxidase
C
Plastocyanin
D
Carotenoids
Question 398
Which of the following is absent in DNA?     
A
U
B
A
C
T
D
G
Question 399
Sub units in prokaryotic ribosomcs are     
A
605-405
B
505-305
C
40S-30S
D
50S-20S
Question 400
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 401
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 402
The neuromuscular transmitter is:    
A
dopamine
B
epineph rifle
C
norepinephrine
D
acetylcholine
Question 403
Cancer of prostate gland is caused due to the exposure to:       
A
lead oxide
B
cadmium oxide
C
potassium oxide
D
chlorine
Question 404
Atropa belladona yields medicine used for:    
A
gastric ulcers
B
checking the eyes
C
leprosy
D
constipation
Question 405
Anabaena has an immense potential as a:    
A
biofertilizer
B
food
C
medicines
D
sewage disposal
Question 406
Lateral conjugation in Spirogyra occurs between individual which:   
A
are heterothallic
B
are homothallic
C
have different characters
D
are floating
Question 407
Natural pearl belongs to:     
A
Arthropoda
B
Protozoa
C
Mollusca
D
Echinodermata
Question 408
The endoskeleton of cell is made up of:    
A
deutoplasm
B
protoplasm
C
endoplasmic reticulum
D
cell wall
Question 409
Lateral root or ginates from:    
A
endodermis
B
pericycle
C
cortex
D
phloem
Question 410
Cystoliths are composed of:    
A
glucosides
B
calcium oxa late
C
calcium carbonate
D
magnesium oxalate
Question 411
Number of linkage group in Pisum sativum is:    
A
2
B
5
C
7
D
9
Question 412
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 413
The back bone of RNA consists of which of the following sugar?     
A
Deoxyribose
B
Ribose
C
Sucrose
D
Maltose
Question 414
Single stranded DNA is found in:    
A
polio viruses
B
rice dwarf virus
C
TMV
D
ct X174
Question 415
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 416
African sleeping sickness is caused by:       
A
Trypanosoma
B
Leishmania
C
Latimeria
D
Plasmodium
Question 417
Competition of species leads to    
A
extinction
B
mutation
C
greater number of niches are formed
D
symbiosis
Question 418
Who proposed the natural system of classification ?     
A
Carolus Linnaeus
B
John Hutchinson
C
Bentham and Hooker
D
Oswald Tippo
Question 419
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 420
Juvenile hormone is secreted by:       
A
thyroid gland
B
thymus gland
C
adrenal gland
D
corpora allata
Question 421
Hypothyroidism causes       
A
myxodema
B
cretinism
C
both (a) and (b)
D
exopthalmic goiter
Question 422
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 423
Seedless water melons are obtained by:    
A
triploidy
B
gibberellin application
C
haploidy
D
vegetative propagation
Question 424
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 425
Starfish belongs to phylum:    
A
Porifera
B
Coelenterata
C
Echinodermata
D
Arthropoda
Question 426
Which of the following metal is present in vitamin B12?     
A
Cobalt
B
Copper
C
Zinc
D
Magnesium
Question 427
A cell active in protein synthesis will rich in:    
A
ribosome
B
Golgi bodies
C
mitochondria
D
lysosome
Question 428
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 429
Humidity in atmosphere decreases rate of:     
A
transpiration
B
photosynthesis
C
glycolysis
D
growth
Question 430
Herdmania belongs to which subphyla:     
A
Cephalochordata
B
Hemichordata
C
Urochordata
D
Protochordata
Question 431
The physiological capacity to produce off springs is called        
A
birth rate
B
biotic potential
C
crude natality
D
mortality
Question 432
Cow dung is appropriately used as:       
A
fuel
B
building material
C
medicine
D
manure
Question 433
Weed killers generally have properties much like that of:    
A
hormone
B
carbohydrate
C
enzymes
D
all of these
Question 434
Raja ii national park is situated in:    
A
Tamil Nadu
B
Karnataka
C
Uttrakhand
D
Rajasthan
Question 435
The AIDS test is known as:     
A
ELISA
B
Australian antigen
C
HIV test
D
None of these
Question 436
Confusion technique involves the use of:       
A
juvenile hormone
B
pheromones
C
ecdysone
D
hormones
Question 437
Sexual reproduction in algae results in the formation of:     
A
opspore
B
zoos pore
C
zygote
D
zygospore
Question 438
Taxon is a:    
A
group of same species
B
any rank in taxomonic hierarchy
C
group of similar genera
D
subdivision of kingdom
Question 439
Claviceps is a member of:     
A
Ascomycetes
B
Basidiomycetes
C
Zygomycetes
D
Phycomycetes
Question 440
Mycorrhiza helps in:    
A
nutrition uptaking
B
food manufacturing
C
disease resistance
D
disease prevention
Question 441
Human population growth is:      
A
lag
B
stationary
C
exponential
D
none of these
Question 442
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 443
Yeast belongs to:    
A
Zygomycetes
B
Basidiomycetes
C
Ascomycetes