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1
Q

CCA base sequence is present in which part of t-RNA?

A

3’ end

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2
Q

In which year was genetically engineered insulin first made?

A

1983

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3
Q

Are natural killer cells granular or agranular?

A

Granular

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4
Q

Phase of maturation in spermatogenesis involves the

A

Formation of spermatids from primary spermatocytes

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5
Q

The stop codons are

A

UAG, UAA, and UGA

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6
Q

Buttress roots arise from

A

Base of tap root and trunk

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7
Q

What are the functions of membranous labyrinth?

A

Hearing and balance

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8
Q

What kind of nucellus is found in polypetalae?

A

Well-developed

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9
Q

How many tegments are found in polypetalae?

A

2

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10
Q

Enzyme TPA (tissue plasminogen activator) is used to

A

Dissolves blood clots

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11
Q

Estuary is the

A

Meeting point of fresh water and sea water

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12
Q

Which is one of the most poisonous product formed by the burning of chlorine containing waste?

A

Dioxin

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13
Q

Placental wolf and tasmanian wolf are examples of

A

Analogy

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14
Q

The most important function of K+ ion in plants in

A

Acts as an enzyme for many physiological processes

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15
Q

In which cell of C4 plants does the primary fixation of co2 occur?

A

Mesophyll cell

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16
Q

Hypogeal germination is found in rice, true or false?

A

False

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17
Q

Hypogeal germination is found in onion, true or false?

A

True

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18
Q

Petunia has valvate aestivation, true or false?

A

True

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19
Q

What type of phyllotaxy is found in Psidium?

A

Opposite phyllotaxy [Psidium= guava]

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20
Q

In bryophytes, operculum develops from

A

Archegonium

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21
Q

Mala-D is a weekly oral contraceptive pill, true or false?

A

False. Mala-D is a daily oral contraceptive pill.

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22
Q

Name a monthly oral contraceptive pill.

A

Quinestrol

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23
Q

Which mouth parts are present to the lateral side of the pre-oral cavity of cockroach?

A

Mandibles and 1st maxilla

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24
Q

A fruit that dehiscences from apex to base and is derived from monocarpellary ovary with marginal placentation is

A

Legume

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25
Q

Water cavity is absent in the stems of which plants?

A

Dicots

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26
Q

Water cavity is present in the stems of which plants?

A

Monocots

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27
Q

Can fehling solution detect starch?

A

No

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28
Q

If testa is removed from water soaked gram seed, the remaining structre is

A

Fully mature embryo

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29
Q

Cosmid is a vector for carrying large DNA fragments into host cells. True or false?

A

True

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30
Q

Interferon is an enzyme that interferes with DNA replication. True/false?

A

False

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31
Q

Study of the effect of global warming on human population comes under

A

Population ecology or autecology

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32
Q

Coniferous forests are evergreen forests. True/false?

A

True

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33
Q

Tundra has permafrost. True/false?

A

True

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34
Q

Acacia trees are found in savannahs. True/false?

A

True

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35
Q

Scrubbers and electrostatic precipitators are generally used for removal of

A

Particulate matter

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36
Q

What type of circulatory system does Balanogolossuses have?

A

Closed type

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37
Q

Balanoglossus have a short trunk. True/false?

A

False. They have a long trunk.

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38
Q

Peritubular capillaries of the nephron arise from the

A

Efferent arterioles

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39
Q

What are the changes in ciliary muscle and eye lens when nearby objects are viewed?

A

When nearby objects are viewed, ciliary muscles contract making the lens more convex, thus decreasing its focal length. The lens thickens.

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40
Q

What are the changes in ciliary muscle and eye lens when distant objects are viewed?

A

When far objects are viewed, ciliary muscles relax making the lens less convex thus increasing the focal length.

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41
Q

A trisomic aneuploidy patient having double barr body and problem in menstrual cycle has a genetic problem called

A

Multi X female (super female)

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42
Q

(a) It is not a congenital disease.
(b) Spreads due to conscious behaviour.
(c) Loss of contact inhibition.
(d) “Don’t die of ignorance” is said in reference to it.
(e) Metastasis
How many of above statements are not correct regarding AIDS?

A

Two

c and d

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43
Q

During evolution, the first living beings were like actinomycetes. True/false?

A

False. They were like bacteria.

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44
Q

Milk formation and secretion is the function of a hormone secreted by adenohypophysis. True/false?

A

true

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45
Q

Increase in calcium levels of body is the function of a hormone secreted by adenohypophysis. True/false?

A

False

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46
Q

What is phenetic classification? What are the other names for phentic classification?

A

Phenetic classification is the classification of organisms based on morphology. It is also known as taxometrics and numerical taxonomy.

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47
Q

In which kingdom only heterotrophic, holozoic and saprophytic modes of nutrition found?

A

Kingdom animalia

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48
Q

Capsella belongs to which family of plants?

A

Brassicaceae

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49
Q

What condition of stamens are found in Capsella?

A

Tetradynamous

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50
Q

Tetradynamous condition of stamen is found in family cucurbitaceae. True/false.

A

False

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51
Q

In conjoint vascular bundles, xylem surrounds phloem. True/false?

A

False.
In conjoint vascular bundles which the two types of tissues are separated from one another.
In collateral vascular bundles, xylem surrounds phloem or vice versa.

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52
Q

Towards which surface is the xylem located in leaf?

A

Adaxial epidermis

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53
Q

Active K+ exchange mechanism for stomatal movement was given by

A

Levitt

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54
Q

Polymerase chain reaction requires thermostable DNA polymerase, DNA ligase and primase. True/false?

A

False.

PCR only requires thermostable DNA polymerase of the three.

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55
Q

What is the ratio of HNO3 and H2SO4 in acid rain composition?

A

3:7

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56
Q

A lake near a village suffered heavy mortality of fish within a span of a few days. The possible reasons are

(a) Lot of urea and phosphate fertilizers were used in nearby crops.
(b) The area was sprayed with DDT by an aircraft.
(c) Lake water turned green and stinky.
(d) Phytoplankton population declined reducing photosynthesis.

A

a,c

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57
Q

What type of vision is found in cockroach?

A

Apposition or mosaic vision

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58
Q

What is supination?

A

Palm facing upwards

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59
Q

What is pronation?

A

Palm facing downwards

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60
Q

Humans can show supination and pronation of palm with the help of

A

Pivot joint

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61
Q

At postsynaptic membrane the new potential developed is called action potential. True/false?

A

False. It is called postsynaptic potential.

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62
Q

Filling of urinary bladder is associated which autonomous nervous system?

A

Sympathetic nervous system

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63
Q

Is increase in salivation a function of sympathetic nervous system?

A

No

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64
Q

In Ascaris, genital duct and digestive duct join to form cloaca. True/false?

A

True

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65
Q

In earthworm, genital duct and digestive duct join to form cloaca. True/false?

A

False

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66
Q

In Taenia, genital duct and digestive duct join to form cloaca. True/false?

A

False

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67
Q

In Locust, genital duct and digestive duct join to form cloaca. True/false?

A

False

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68
Q

In which part of bacteria are respiratory enzymes found?

A

Cell membrane

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69
Q

Phanerogams are seeded plants, true or false?

A

True

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70
Q

Which sugar is found in the haemolymph of insects?

A

Trehalose

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71
Q

Glutamate dehydrogenase is an important enzyme involved in

A

Amino acid biosynthesis

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72
Q

During an experiment, vegetative nucleus was destroyed inside the pollen tube. Immediately afterwards it was observed that the growth of pollen tube was stopped and pollen tube could not reach up to ovule, because

A

Growth of pollen tube is controlled by vegetative nucleus

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73
Q

HindIII produces blunt ends. True/false?

A

False

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74
Q

EcoRV produces blunt ends. True/false?

A

True

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75
Q

Sonneratia trees are found in which forests?

A

Mangrove forests

[Sonneratia= sunderbans]

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76
Q

In which biomes are Dipterocarpus (shorea trees) found?

A

Deciduous forests

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77
Q

In which biomes are Tendu trees found?

A

Deciduous forests

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78
Q

In which biomes are Hopea trees found?

A

Deciduous forests

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79
Q

File like rasping organ is absent in which mollusc?

A

Loligo

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80
Q

Their function is to move particles or molluscs in specific direction over the epithelium. They are mainly present in inner surfaces of hollow organs. Identify the cells in above mentioned sentence.

A

Cuboidal ciliated epithelium

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81
Q

If due to some injury, the chordae tendineae of the tricuspid valve of the human heart become non-functional, what will be the immediate effect?

A

The flow of blood into the pulmonary artery will be reduced.

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82
Q

What is the function of duct of bellini?

A

Conduction of urine

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83
Q

Aperture of an eye can be changed by

A

Iris

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84
Q

Which organism was the common ancestor of birds and crocodile?

A

Thecodontia

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85
Q

Agranal chloroplast are found in which cells?

A

Bundle sheath cells of monocot

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86
Q

Glucose is absorbed in body through which process?

A

Active transport, simple diffusion and facilitated diffusion

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87
Q

Osmosis involves diffusion of water from its more to less concentrated side. True/false.

A

True

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88
Q

Intrafascicular cambium is secondary in origin. True/false?

A

False. It is primary in origin as it originated from embryonic meristems.

89
Q

Which is the msot abundant type of configuration of proteins?

A

Tertiary protein

90
Q

Global agreement in specific control strategies to reduce the release of ozone depleting substances was adopted by which protocol?

A

Montreal protocol

91
Q

Global agreement in specific control strategies to reduce the release of greenhouse gases was adopted by which protocol?

A

Kyoto protocol

92
Q

Gills in apple snail are found in which part of the body?

A

Mantle cavity

93
Q

Which type of regeneration is found in planaria?

A

Morphallaxis

94
Q

What is morphallaxis?

A

In Morphallaxis, any cut part of the organism regenerates into whole organism.

95
Q

What is epimorphosis?

A

In Epimorphosis, the cut or injured part of the organism is repaired. The cut part is regenerated.

96
Q

Sphenodon is the scientific name of

A

Tuatara

97
Q

Reptiles have mesonephric kidneys, true or false?

A

False

Reptiles have metanephric kidneys.

98
Q

What is the ploidy of zygospore?

A

Diploid

99
Q

Phycomycetes show all types of syngamy. True/false?

A

True

100
Q

If a recombinant DNA bearing gene for ampicillin is transferred into E.coli cells and the host cells are transferred to ampicillin containing medium, the transformant grows but untransformed host dies. True/False?

A

True

101
Q

What is the ploidy of a diploid cell in the G2 phase of mitosis?

A

2n

102
Q

If the number of chromosomes are four, what are the number of chromatids in prophase?

A

8

103
Q

What are Balbiani rings?

A

The bands of polytene chromosomes become enlarged at certain times to form swellings called puffs. In the regions of puffs, the chromonemata uncoil and open out to form many loops.The puffs indicate the site of active genes where mRNA synthesis takes place. These loops are called Balbiani rings

104
Q

Which form of nitrogen does rhizobium convert?

A

Rhizobium converts atmospheric nitrogen.

105
Q

WHat is a wetland?

A

Wetland is a flooded ecosystem where oxygen free processes prevail.

106
Q

Which phytohormone increases the shelf life of fruits?

A

Cytokinin

107
Q

In MOET fertilised eggs are removed surgically at 8-32 cell stage and transferred to surrogate mother. True/false?

A

False.

In MOET fertilised eggs are removed <b>non</b>-surgically at 8-32 cell stage and transferred to surrogate mother.

108
Q

Sodium citrate is used as a chelating agent to clot blood. True/false?

A

True

109
Q

Blood without clotting factors is called serum. True/false?

A

False. It is blood plasma without fibrinogens.

110
Q

When was the first animal cloned?

A

1996 (dolly)

111
Q

Knockout mouse is genetically modified by replacing its existing gene with an artificial gene.True/false?

A

True

112
Q

How many parotid, submaxillary and sublingual glands are present?

A

One pair each

113
Q

Glomerular filtration rate is filtrate formed by each kidney per minute and it is 125 ml/min. True/false?

A

False. Glomerular filtration rate is filtrate formed by <b>both </b> kidney per minute and it is 125 ml/min.

114
Q

Which part of male reproductive system is analogous to labia majora of females?

A

Scrotum

115
Q

What are the four key stages of anaerobic digestion to form biogas?

A

Hydrolysis, acidogenesis, acetogenesis and methanogenesis

116
Q

Biocenology is the study of

A

Community, it is the study of interaction of living and non living things.

117
Q

In flowering plants archesporium gives rise to

A

Wall and sporogenous tissue

118
Q

Agar agar is obtained from

A

Red algae

119
Q

The most primitive and advanced type of placentations are , respectively ,

A

Superficial and basal placentation

120
Q

In the process of aerobic respiration, how many ATP molecules will be generated from one molecule of triose phosphate?

A

20

121
Q

Which one is the precursor of ethylene?

A

Methionine

122
Q

Radish is a perennial plant, true/false?

A

False. It is annual/biennial.

123
Q

Mango is an annual plant. True/false?

A

False. Mango is a perennial plant.

124
Q

WHat is the concentration of methane among the major greenhouse gases?

A

20%

125
Q

What is the concentration of CFCs among the major greenhouse gases?

A

14%

126
Q

Nucleases and amylopsin are found in which digestive fluids?

A

Pancreatic juice

127
Q

What event that is likely to occur in the blood entering pulmonary capillaries?

A

Reverse chloride shift

128
Q

Angiotensinogen II is a vasodilator. True/false?

A

False. It is a vasoconstrictor.

129
Q

Mandible is an unpaired cranial bone. True/false?

A

False. It is an unpaired facial bone. Sphenoid bone is an unpaired cranial bone.

130
Q

The somatic neural system of the peripheral nervous system relays information between

A

CNS and skeletal muscles.

131
Q

Autonomous neural system relays information between

A

CNS and smooth muscles

132
Q

Mule is formed by cross hybridisation. True/false?

A

False. It is formed by interspecific hybridisation.

133
Q

What is the role of bicarbonate ions in stomach?

A

Protection of stomach wall from acid along with mucus

134
Q

The mucus and bicarbonates in the intestinal mucosa are rescreted by

A

Pancreas

135
Q

Which order does the plant Porella belong to?

A

Bryophyte (liverwort)

136
Q

Polyethylene glycol enhances or induces fusion of protoplasts, true/false?

A

True

137
Q

Sodium chloride enhances or induces fusion of protoplasts, true/false?

A

True

138
Q

The UN Conference of Parties on climate change in the year 2011 was held in which country?

A

South Africa

139
Q

In ETS, Oxygen acts as an electron acceptor only. True/false?

A

False. Oxygen acts as the final electron acceptor and also as a hydrogen ion acceptor.

140
Q

Cyt c is small mobile protein attached to outer surface of inner membrane of mitochondria, true/false?

A

True.

141
Q

Is equisetum heterosporous or homosporous?

A

Homosporous

142
Q

Is Adiantum heterosporous or homosporous?

A

Homosporous

143
Q

All the mammals have body hair without any exceptions. True/false?

A

False.

144
Q

Do chondrichthyes have paired appendages?

A

Yes

145
Q

Removal of proximal convoluted tubule from the nephron will result in

A

Dilute urine

146
Q

Sertoli cells are involved in release of ABP, true/false?

A

True. (ABP: Androgen binding protein)

147
Q

Sertoli cells inhibits the secretion of anti mullerian hormone. True/false?

A

False. They release anti mullerian hormone.

148
Q

Presence of which of the following hormone in urine represents fertile period in a female during her fertile age?

A

Leutinizing hormone

149
Q

Is tiger cat a placental or marsupial mammal?

A

Marsupial mammal

150
Q

A characteristic mushroom shaped gland is present in which segments of cockroach?

A

6 to 7

151
Q

Photoreceptors in human eye are depolarised during darkness and become hyperpolarized in response to the light stimulus. True/false?

A

True

152
Q

Restorage of nucleocytoplasmic ratio is performed in

A

M phase

153
Q

The parotid, sub-maxillary and sub-lingual salivary glands are located just outside the buccal cavity and secrete salivary juice into the buccal cavity. True/false.

A

True

154
Q

Chloroplasts are aligned with their flat surface, parallel to the tangential wall of cells when

1) Moderate incident light comes
2) Diffused light comes
3) Plant is kept in strong light
4) `When intermittent strong and diffused light is given

A

2

155
Q

What condition of chloroplast is known as epistrophe?

A

Chloroplast align parallel to the walls of mesophyll cells (mainly palisade cells) when intensity of light is minimum, to get more and more of light.

156
Q

What is parastrophe?

A

When the intensity of light is maximum the chloroplast gets aligned perpendicular to the mesophyll cells to avoid photooxidation of chlorophyll a molecule This condition is called Parastrophe.

157
Q

What is the alignment of chloroplast is medium light called?

A

Apostrophe

158
Q

Name all the unpaired cranial bones.

A

Frontal
Occipital
Sphenoid
Ethmoid

159
Q

Name the unpaired facial bones.

A

Vomer
Mandible
Hyoid

160
Q

Are conidia arranged basipetally on conidiospores?

A

Yes

161
Q

WHat is a hypogynous ovary?

A

Superior ovary

162
Q

What type of placentation does mustard have?

A

Parietal placentation

163
Q

In Nepenthes, the coiled tendril like structure is the modification of

A

Petiole

164
Q

Tyloses are present in lumen of tracheids. True/false?

A

False. They are present only in vessels.

165
Q

Epithem cells are

A

Loosely arranged parenchyma cells below the hydathodes

Epithem refers to the loosely arranged cells at the dead end of veins (hydathodes) through which water oozes out as a dilute solution of minerals under the influence of positive root pressure. This process is called as guttation.

166
Q

During daytime, the opening of stomata involves influx of Cl– ions inside the guard cells. True/false

A

True

167
Q

During daytime, the opening of stomata involves increase in the concentration of malic acid in guard cells. True/false?

A

False. Potassium malate is formed in guard cells, not malic acid.

168
Q

The first electron acceptor in cyclic photophosphorylation is

A

FeS

169
Q

In C4 plants, PEP carboxylase and RuBisCO enzymes are present in which parts of cells?

A

Cytosol and stroma

170
Q

Cytochrome c-oxidase complex contains

A

Cyt a, Cyt a3, Cu centres

171
Q

Control of metabolism is a function of DNA. True/false

A

False

172
Q

In prokaryotes during DNA replication, which enzyme has exonuclease activity in both 5’—-> 3’ and 3’ —> 5’ directions?

A

DNA polymerase 1

173
Q

The number of genes present on the human - ``Y’’- chromosome, is

A

231

174
Q

Sebaceous gland secretion mainly contains

A

Sterols and hydrocarbons

175
Q

Name an inorganic cofactor present in cytochrome oxidase.

A

Cu2+

176
Q

Enamel is secreted by A which are B in origin.

A

A- ameloblast cells

B- ectodermal`

177
Q

Filiform papillae are the smallest papillae. true/false?

A

True

178
Q

The protein coat around the core of HIV is made of

A

P24

179
Q

What is the genetic material of hepatitis A virus?

A

ss Rna

180
Q

The ions essential for cardiac muscle contraction are

A

Na+, Ca2+

181
Q

Genu and splenium are the parts of

A

Corpus callosum

182
Q

Free nerve endings of skin receptors in humans are concerned with sense of

A

Pain

183
Q

Destruction of –––I––– secreting –––II––– of substantia nigra leads to Parkinson’s disease

A

I- dopamine

II- Pars compacta

184
Q

What is the function of somatostatin?

A

Suppresses release of hormones from pancreas

185
Q

WHat is the function of Enterogastrone?

A

Slows gastric contraction

186
Q

What is the function of Enterocrinin?

A

Stimulates crypts of lieberkuhn to release enzymes in pancreatic juice

187
Q

What is the function of secretin?

A

Releases bicarbonate in pancreatic juice

188
Q

Tunica media is thick in arteries and thin in veins. True/false?

A

True

189
Q

Selaginella is a bryophyte. True/false?

A

False. It is a pteridophyte.

190
Q

Semi–autonomous cell organelles and bacteria resemble with each other in their double membrane structure. True/false?

A

False. Bacteria don’t have double membrane structure.

191
Q

In which stage of cell cycle does duplication of centrioles occur?

A

S phase

192
Q

Root nodules are formed due to division and growth of

A

Cortex and pericycle cells

193
Q

Aloe belongs to the family Solanaceae. True/false?

A

False. It is a monocot.

194
Q

C4 acid is converted into C3 acid and vice–versa in sugarcane leaf in

A

Malic acid (4C) ——> Pyruvate (3C) (Bundle sheath cell)

PEP (3C) ——> Malic acid (4C) (Mesophyll cell cytoplasm)

195
Q

Is barley a monocot or a dicot?

A

A monocot

196
Q

Orchid seeds are monocot and endospermic. True/false?

A

False. They are non endospermic.

197
Q

In Turner’s syndrome, the individual has the chromosome complement as 45 + XO. True/false?

A

False.

THey have genetic complement 44 + XO

198
Q

Which enzyme is also known as Kornberg enzyme?

A

DNA Polymerase 1

199
Q

Jacobson’s organ is found in

A

Some reptiles

200
Q

Weberian ossicles are found in

A

Some osteichthyes

201
Q

Organ of Bojanus is found in

A

Molluscs

202
Q

What is the excretory structure of Nereis?

A

Nephridia

203
Q

What type of excretory structure is present in Lepisma?

A

Malpighian tubules

204
Q

<i>Palaemon</i> is the scientific name of

A

Shrimp

205
Q

Green glands are found in Palaemon. True/false?

A

True

206
Q

Approximately, how much blood is pumped out by both the ventricles, per cardiac cycle?

A

140 ml

207
Q

What type of junctions are present in intercalated disc of cardiac muscles?

A

Gap junction

208
Q

Amniotic fluid extracted for the purpose of amniocentesis actually contains

A

Exfoliated somatic cells from foetus

209
Q

Number of nitrogen in adenine molecule is

A

5

210
Q

Antianxiety drug includes amphetamines. True/false?

A

False. They comtain barbiturates.

211
Q

The action of adrenaline on heart is via which secondary messenger?

A

cAMP

212
Q

Based on photoperiod, what type of plant is rice?

A

Short day plant

213
Q

Based on photoperiod, what type of plant is soyabean?

A

Short day plant

214
Q

Based on photoperiod, what type of plant is tobacco?

A

Short day plant

215
Q

Based on photoperiod, what type of plant is tomato?

A

Day neutral plant

216
Q

Based on photoperiod, what type of plant is henbane?

A

Long day plant

217
Q

Based on photoperiod, what type of plant is sugarbeet?

A

Long day plant

218
Q

Based on photoperiod, what type of plant is cucumber?

A

Day neurtal plant

219
Q

Based on photoperiod, what type of plant is potato?

A

Long day plant

► Biology (NEET) (39 decks)

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