Gurukul Mains Biology

Tue,July 18, 2017 01:01 AM

Continue of July 17th VIJETHA page

43. Identify the two correct statements with reference to meiosis

I. Bead like structure are absent on chromosomes.
II. Displacement of chiasmata occurs in diakinesis.
III. Separation of two basic sets of chromosomes.
IV. No division of centromere.

The correct statements are


44. The stage in which daughter chromosomes move toward the poles of the spindle is

A) Anaphase B) Metaphase
C) Prophase D) Telophase

45. Plasma membrane is made up of

A) Protein, lipid, carbohydrate
B) Lipid, carbohydrate
C) Protein, lipid and glucose
D) Protein and cellulose


46. Central dogma of protein synthesis is

A) DNA --->RNA ---> Protein
B) DNA --->DNA ---> Protein
C) RNA ---> DNA --> Protein
D) DNA ---> Protein ---> RNA

47. HIV is classified as a retrovirus because its genetic information is carried in

A) DNA instead of RNA
C ) RNA instead of DNA
D) Protein coat

48. Removal of introns and joining the exons in a defined order in a transcription unit is called..

A) Capping B ) Splicing
C) Tailing D) Transformation

49. The Segments of DNA, capable of moving from one location to another are

A) Introns B) Transposons
C) Exons D) Operons

50. Chromosome is made up of

A).DNA + pectin
C) DNA + Histone
D) Only histone

51. What is not true for genetic code?

A) It is unambiguous
B) A codon in mRNA is read in a non-contiguous fashion
C) It is nearly universal
D)It is degenerate

52. Match the following

1) W. Bateson
a) Chromosomal theory of
2) T.H Morgan
b) Law of purity of gametes
3) G. Mendel c) Genetics

Select the appropriate answer

A) 1- a, 2- b, 3- c B) 1- c, 2- a, 3- b
C) 1- c, 2- b, 3- c D) 1- b, 2- a, 3- c

53. A baby has been born with a small tail. It is the case exhibiting

A) Atavism B) Mutation
C) Retrogressive evolution
D) Metamorphosis

54. In nature, the process by which different organisms evolve similar traits is called

A) Genetic drift
B) Artificial selection
C) Divergent evolution
D) Convergent evolution

55. A character which is expressed in a hybrid is called

I) Dominant II) Recessive
III) Co-dominant IV) Epistatic
Select the appropriate answer
A) Only I B) Only III
C) I and II D) I and IV

56. The genotype of a plant showing the dominant phenotype can be determined by

A) Back cross B) Test cross
C) Dihybrid cross
D) Pedigree analysis

57. Test cross is a cross between

A) Hybrid Hybrid parent
B) Hybrid Recessive parent
C) Hybrid Dominant parent
D) Two distantly related species

58.Dolly, The first cloned mammal, was produced by

A) Parthenogenesis
B) Artificial fertilization
C) Replacement of zygote nucleus by somatic nucleus
D) In vitro fertilization

59. Micro propagation is a technique

A) For production of true type plants
B) For production of haploid plant
C) For production of Somatic hybrids
D) For production of Somaclonal plants

60. What is true of plasmid?

A) Part of nuclear chromosome
B) Contains genes for vital activities
C) Found in viruses
D) Widely used in gene transfer

61. The linking of antibiotic resistance gene with the plasmid vector became possible with

A) Endonucleases B) DNA ligase
C) Exonucleases
D) DNA polymerase

62. Cry genes are obtained from

A) Cotton pest B) Tobacco plant
C) Bacillus thuringiensis
D) E Coli

63. The first transgenic crop was

1) Pea 2) Tobacco
3) Flax 4) Cotton
Select the suitable answer
A) Only 1 & 4 B) Only 2
C) Only 2 & 4 D) Only 4

64. Somatic hybridization is achieved through

A) Grafting B) Protoplast fusion
C) Conjugation
D) Recombinant DNA technology

65. Restriction endonucleases are used in genetic engineering and they

A) Cut DNA at various sites
B) Join DNA segments
C) Cut RNA at specific sites
D) Cut DNA at specific sites

66. One of the following processes involve southern blotting technique

A) rDNA technology
B) DNA finger printing
C) Production of transgenic plants
D) Formation of suspension culture

67. Water containing cavities in vascular bundles are found in

A) Cycas B) Pinus
C) Sunflower D) Maize

68. An example of a seed with endosperm, perisperm and caruncle is

A) Castor B) Cotton
C) Coffee D) Lily

69. Root develops from which part of the germinating seed?

A) Cotyledons B) Radicle
C) Pericarp D) Plumule

70. Phylloclade is a modified

A) Bud B) Tuber
C) Stem D) Flower

71. Quiescent centre is found in plants at

1) Shoot tip 2) Cambium
3) Root tip 4) Leaf tip
Select the correct answer
A) Only 1 B) Only 2
C) Only 3 D) 1, 2, 3 and 4

72. Seeds possess spongy aril in

A) Sagittaria B) Potamogeton
C) Eichhornia D) Nymphaea

73. Sieve tubes are present in

A) Parenchyma B) Xylem
C) Phloem D) Sclerenchyma

74. Match the following

Modification Example
1. Stilt roots i) Avicenia
2. Prop roots ii) Banyan
3. Fibrous roots iii) Asparagus
4. Tap roots iv) Carrot and
5. Pneumatophores v) Maize
A) 1- iv, 2- ii, 3- iii, 4- i, 5- v
B) 1- v, 2- iii,3- ii, 4- iv, 5- i
C) 1- i, 2- ii, 3- iii, 4- iv, 5- v
D) 1- v, 2- ii, 3- iii, 4- iv, 5- i

75. Match the following

Fruit Edible part
1. Pepo i) Mesocarp
2. Nut ii) Mesocarp, Endocarp
& placenta
3. Drupe iii) Cotyledons and
fleshy pedicel
4. Hesperidium iv) placental hairs
of endocarp
A) 1- iii, 2- ii, 3- i, 4- iv
B) 1- ii, 2-iii, 3- i, 4- iv
C) 1- ii, 2- i, 3- iii, 4- iv
D) 1- ii, 2- iii, 3- iv, 4- i

76. During photosynthesis, which of the followings acts as a reservoir for hydrogen ions?

A) Cristae B) Stroma
C) Thylakoid space D) Matrix

77. In CAM plants, CO2 required for photosynthesis enters the plant body during

A) Daytime through the lenticels
B) Night when the hydathodes are open
C) Daytime when the stomata are open
D) Night through the stomata which are kept open

78. Chemiosmosis hypothesis given by Peter Mitchel proposes the mechanism of

A) Synthesis of NADH
B) Synthesis of ATP
C) Synthesis of FADH2
D) Synthesis of NADPH

79. The synthesis of one molecule of glucose during Calvin cycle requires

A) 6 molecules of ATP and 12 molecules of NADPH2
B) 12 molecules each of ATP and NADPH2
C) 12 molecules of ATP and 18 molecules of NADPH2
D) 18 molecules of ATP and 12 molecules of NADPH2

80. In C4 plants, the bundle sheath cells

A) Have thin walls to facilitate gaseous exchange
B) Have large intercellular spaces
C) Are rich in PEP carboxylase
D) Have a high density of chloroplasts

81. Which of the following is WRONGLY matched?

A) Sorghum Kranz anatomy
B) PEP carboxylase Mesophyll cells
C) Blackman Law of limiting factors
D) PS II P700

82. Which one of the following doesnt play any role in photosynthesis?

A) Phycocyanin B) Xanthophylls
C) Phycoerythrin D) Anthocyanin

83. Glycolysis

A) Takes place in the mitochondria
B) Produces no ATP
C) Has no connection with electron transport chain
D) Reduces two molecules of NAD+ for every glucose molecule processed

84. The end product of the Calvin cycle is

85. In C3 plants, the first stable product of photosynthesis during the dark reaction is
A) Phosphoglyceraldehyde
B) 3-phosphoglyceric acid
C) Oxaloacetic acid
D) Malic acid

86. Hill reaction occurs in

A) Absence of water
B) Total darkness
C) High altitude plants
D) Presence of ferricyanide

87. Oxidative phosphorylation refers to

A) Anaerobic production of ATP
B) The citric acid cycle production of ATP
C) Production of ATP by chemiosmosis
D) Alcoholic fermentation

88. Seed dormancy is due to the

I) Ethylene II) Abscisic acid
III) IAA IV) Starch
Choose the correct answer
A) Only I B) Only II
C) Only III D) I, II, III, and IV

89. Water will be absorbed by root hair when

A) Concentration of salts in the soil is high
B) Concentration of solutes in the cell sap is high
C) Plant is rapidly respiring
D) They are separated from soil by a permeable membrane

90. Opening and closing of stomata is due to the

A) Gaseous exchange
B) Change in Turgor pressure of guard cells
C) Hormonal change in guard cells
D) Respiration

91. Match the following

Column - I
A. Mass flow hypothesis
B. Relay pump theory
C. Transpiration pull theory
D. Pulsatile movement theory
Column - II
p. J. C. Bose q. Strasburger
r. Munch s. Godlewski
t. Dixon and Jolly
A) A - r, B - s, C - p, D t
B) A - r, B - s, C - t, D - p
C) A - s, B - r, C - t, D - p
D) A - s, B - r, C - p, D t

92. Which one of the followings establishes the barrier to the apoplastic movement of solutes into the vascular cylinder?

A) Intracellular spaces
B) Plasma membrane
C) Casparian strips
D) Plasmodesmata

93. If water enters in a cell, the pressure exerted by its swollen protoplast is

A) Osmotic pressure
B) Diffusion pressure deficit
C) Turgor pressure
D) Imbibition

94. An enzyme that can stimulate germination of barley seeds is

I ) II) Lipase
III) Protease IV ) Invertase
Choose the correct answer
A) Only I B) Only II
C) Only III D) All the above

95. The sugarcane Plant has

A) Reticulate venation
B) Pentamerous flowers
C) Dumb bell-shaped guard cells
D) Capsular fruits

96. Wilting of a plant results from excessive

A) Respiration B) Photosynthesis
C) Absorption D) Transpiration

97. Coiling of garden pea tendrils around any support is an example of

A) Thermotaxis B) Thigmotaxis
C) Thigmonasty D) Thigmotropism

98. Match the following

Enzyme product
I. Pepsin 1. Maltose
II. Amylase 2. Fats & glycerol
III. Lipase 3. Glucose
IV. Sucrase 4. Peptones
A) I-3, II-1, III-4, IV-2
B) I-4, II-3, III-1, IV-2
C) I-4, II-1, III-2, IV-3
D) I-3, II-1, III-2, IV-4

99. Why are UGA, UAG and UAA called termination codons?

A) They do not specify any amino acid
B) They are present at the beginning of mRNA
C) They terminate anticodons
D) They indicate initiation of translation

100. Match the following

Inflorescences Example
1. Verticellaster i) Ficus / fig tree
2. Hypanthodium ii) Euphorbiaceae
3. Cyathium iii) Lamiaceae
A) 1- iii, 2- ii, 3- i,
B) 1- ii, 2- i, 3- iii,
C) 1- i, 2- ii, 3- iii,
D) 1- iii, 2- i, 3- ii

101. First step of taxonomy is

A) Identification
B) Classification
C) Nomenclature
D) Description

102. Anticancer drug is

A) Reserpine B) Digitalin
C) Vinblastin D) Morphine

103. The first National park in India

A) Kaziranga B) Keoladeo Ghana
C) Jim corbett D) KBR park

104. Ex-situ conservation is

A) National park
B) Biosphere reserve
C) Sacred grove
D) Cryopreservation

105. Gene banks and in-vitro culture are mostly used for

A) In-situ conservation of endangered fauna
B) Ex-situ conservation of rate animals
C) In-situ conservation of animal species in their natural habitat
D) Off-site conservation of plant species

106. The level of body organisation in the simplest protists is

A) Tissue level B) Cellular level
C) Protoplasmic level
D) Organ level

107. Connective tissues are derived from

A) Ectoderm B) Endoderm
C) Mesoderm D) All the above

108. Level of organisation in sponges is

A) Cellular level B) Organ level
C) Tissue level
D) Organ system level

109. Sacculina is commonly called

A) Crayfish B) Rock barnacle
C) Water flea
D) Root-headed barnacle

110. Match the following

Common name
I. Venus flower basket
II. Glass rope sponge
III. Bath sponge
IV. Dead mans fingers
V. Fresh water sponge
Scientific name
1. Euspingia 2. Spongilla
3. Hyalonema 4. Euplectella
5. Chalina
A) I-3, II-1, III-4, IV-2, V-5
B) I-4, II-3, III-1, IV-5, V-2
C) I-4, II-1, III-2, IV-3, V-5
D) I-3, II-1, III-2, IV-4, V-5

111. The study of different body functions and process is called

A) Anatomy B) Ecology
C) Physiology D) Morphology

112. The lowest level of organization among the following is

A) Biosphere B) Ecosystem
C) Population D) Community

113. The founder of Modern systematics is father of taxonomy i.e

A) Ernst Haeckel
B) A.P de candolle
C) Carolus Linnaeus
D) John Ray

114. The life process which build up or store energy are called

A) Metabolism
B) Anabolic process
C) Catabolic process
D) Energy utilisation

115. Domain is

A) A taxon lower than kingdom
B) A taxon higher than kingdom
C) A taxon is lower than phylum
D) A taxon is lower than class

116. Find out the wrong match

A) Rauwolfia vomitoria reserpine
B) Vinca rosea poppy
C) Fox glove digitalin
D) Spanish flag - lantana

117. Genetic variability among the individuals of a species is

A) Gamma diversity
B) Species diversity
C) Genetic diversity
D) Beta diversity

118. Latest biosphere reserve in India is

A) Papikondalu
B) Seshachalam hills
C) Aravalli hills D) Jaintia hills

119.Vaccine cannot be produced against Plasmodium, because

A) Antibiodies are ineffective
B) Antigen cannot stimulate the production of antibodies
C) Antigens of Plasmodium are not stable
D) Inefficiency of immune system in the host

120. Mosquitoes are biological vectors for

A) Malarial parasite and filarial worm
B) Malarial parasite and Entamoeba
C) Common roundworm and filarial worm
D) Common roundworm and Entaoeba

121. Cancer is an example for

A) Infectious disease
B) Contagious disease
C) Deficiency disease
D) Non- infectious disease

122. Infective state of Ascaris to Man

A) First stage rhabditiform larva
B) Second stage rhabditiform larva
C) Third stage rhabditiform larva
D) Fourth stage rhabditiform larva

123. Which of the following is a bacterial disease

A) Small pox B) Typhoid
C) Measles D) Polio

124. Aedes mosquito is the vector for pathogens of

A) Malaria, Filariasis
B) Chikungunay, Dengue fever
C) Yellow fever, Malaria
D) Cholera, typhoid

125. Choose the incorrect from the following

A) Hallucinogenic Datura, Atropa
B) Barbiturates Sleeping pills
C) Benzodiazepins Tranquilizers
D) Amphitemines Cause depression

126. Heroin acts as a

A) Stimulant B) Depressant
C) Hallucinogen D) Intensifier

127. Species ecology deals with

A) Community dynamics
B) Population dynamics
C) Ecological Nich
D) Biome

128. An association of the interacting members of populations of different species in a particular area is called

A) Community B) Population
C) Biome D) Ecosystem

129. Light is a

A) Abiotic Chemical factor
B) Biotic _ Physical factor
C) Abiotic Physical factor
D) Biotic chemical factor

130. The functional unit of the biosphere

A) Ecosystem B) Community
C) Landscape D) Biome

131. Biological rhythms repeat annually are

A) Circadian rhythms
B) Cercannular rythms
C) Photo periodism
D) Lunar periodism
132. The migration of birds from Siberia in winter to various parts of India is an example for
A) Critical photoperiod
B) Cricadian rhythm
C) Lunar photoperiod D) A and B

133. The nature and properties of soil depends on

A) Vegetation B) Climate
C) Weathering D) B and C

134. The interaction where one species is benefited and another is neither benefitted nor harmed

A) Parasitism B) Ammensalism
C) Commensalism D) Competition

135. Lichens represents mutualism between

A) Fungus and higher plants
B) Fungus and Cyanobacteria
C) Sea anemone and clown fish
D) Barnacle and whale

136. Various steps in decomposition are

A) Fragmentation
B) Leaching and catabolism
C) Humification and mineralization
D) All the above

137. The food chain ends with

A) Parasites B) Predators
C) Climax carnivores
D) Decomposers

138. The pyramid of biomass in a sea

A) Upright B) Inverted
C) Spindle D) None of the above

139. Human activities have significantly influenced

A) Carbon cycle B) Nitrogen cycle
C) Water cycle
D) Phosphorus cycle

140. Reservoir of gaseous cycle is

A) Lithosphere B) Hydrosphere
C) Atmosphere D) Stratosphere

141. The size of a population increase if

A ) Natality = Mortality
B) Natality < Mortality
C) Natality > Mortality
D) Mortality > Natality

142. One of the following is the major cause for CO pollution in large cities is
A) Rapid urbanization

B) Power plants
C) Automobiles D) Spinning mills

143. The major air pollutant that takes part in the formation of photochemical smog is

A) Nitrogen oxide
B) Sulphur dioxide
C) Carbon monoxide
D) Carbon dioxide

144. Which is the most important effect of PAN on human beings

A) Cardiac arrest B) Stomachache
C) Irritation of eye
D) Black spots on the body

145. According to the Central Pollution Control Board (CPCB) particles of which diameter are harmful to man and air breathing organisms.

A) 5 micrometers
B) 2.5 micrometers
C) 3.0 micrometers
D) 4.0 micrometers

146. The prime contaminants for eutrophication are

A) Sulphates B) Nitrates
C) Phosphates D) B and C

147. Which two gases are commonly called as green house gases ?

A) CO2 & SO2 B) CO2 & CH4
C) CFC & N2O D) CO2&N2O

148. Montreal protocol is associated with

A) Control of radioactive waste
B) Protection and management of forests
C) Control over green house gases
D) Control of emission of ozone depleting substances


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