UP TGT 2021 — Biology (Series A)

Biology

1. 1. Which of the following is responsible for the vibrations of the vocal cords during speech ?

   • (a) Ligaments
   • (b) Tendon
   • (c) Inspired air
   • (d) Expired air
   उत्तर देखें

   उत्तर: (d)

2. 2. In Prokaryotes, of the following which is absent ?

   • (a) Nuclear membrane
   • (b) Mitochondria
   • (c) Chloroplast
   • (d) All of the above
   उत्तर देखें

   उत्तर: (d)

3. 3. In which type of fossil, both the external as well as internal structure are preserved ?

   • (a) Petrification
   • (b) Pseudofossil
   • (c) Compression
   • (d) Incrustation
   उत्तर देखें

   उत्तर: (a)

4. 4. In obelia colony which of the following is not covered by perisare ?

   • (a) Hydranth
   • (b) Blastostyle
   • (c) Medusa
   • (d) Coenosarc
   उत्तर देखें

   उत्तर: (c)

5. 5. In the gastrulation process of Amphioxus which organogenesis occurs from the following ?

   • (a) Neuralization
   • (b) Notogenesis
   • (c) Mesogenesis and Coelom
   • (d) All of the above
   उत्तर देखें

   उत्तर: (d)

6. 6. Chocolate is obtained from the seeds of

   • (a) Erythroxylan coca
   • (b) Theobroma cacao
   • (c) Cola nitida
   • (d) Catha edulis
   उत्तर देखें

   उत्तर: (b)

7. 7. The existence of homologous structures suggests the occurrence of

   • (a) Divergent evolution
   • (b) Convergent evolution
   • (c) Microevolution
   • (d) Macroevolution
   उत्तर देखें

   उत्तर: (a)

8. 8. Alginic acid is found in the

   • (a) Cell wall of Red Algae
   • (b) Cell wall of Blue-green Algae
   • (c) Cell wall of Brown Algae
   • (d) Cell wall of Green Algae
   उत्तर देखें

   उत्तर: (c)

9. 9. _______ is not found in almost all plant cells.

   • (a) Centriole
   • (b) A large central vacuole
   • (c) 70 S Ribosome
   • (d) 80 S Ribosome
   उत्तर देखें

   उत्तर: (a)

10. 10. Fasciola attaches to liver by

    • (a) Four suckers
    • (b) Two suckers
    • (c) One sucker
    • (d) Hooks only
    उत्तर देखें

    उत्तर: (b)

11. 11. Spore sac in Funaria is formed by

    • (a) Amphithecium
    • (b) Endothecium
    • (c) Collenchyma
    • (d) Metamorphosis
    उत्तर देखें

    उत्तर: (b)

12. 12. CO₂ acceptor in sugarcane is

    • (a) Phosphoglycolic acid
    • (b) Oxaloacetate
    • (c) RuBp
    • (d) Phosphoenolpyruvic acid
    उत्तर देखें

    उत्तर: (d)

13. 13. What is the functions of Keber’s Organ in Unio ?

    • (a) Excretory
    • (b) Vascular
    • (c) Digestive
    • (d) Reproductive
    उत्तर देखें

    उत्तर: (a)

14. 14. Litmus is obtained from

    • (a) Red Algae
    • (b) Bryophyta
    • (c) Lichen
    • (d) All of the above
    उत्तर देखें

    उत्तर: (c)

15. 15. Which of the following statements is not true about the Indian leech, Hirudinaria ?

    • (a) Its medical use in India dates back to around 1000 BC.
    • (b) It sucks blood from fish, frog, cattles and humans.
    • (c) Digestion of the blood takes 10 to 14 months.
    • (d) Its body cavity is well developed.
    उत्तर देखें

    उत्तर: (d)

16. 16. In Uromastrix ‘Y’ shaped chevron bone is found in which vertebra ?

    • (a) Caudal
    • (b) Sacral
    • (c) Thoracic
    • (d) Atlas
    उत्तर देखें

    उत्तर: (a)

17. 17. A modified protostele with central pith is known as

    • (a) Siphonostele
    • (b) Actinostele
    • (c) Plectostele
    • (d) None of these
    उत्तर देखें

    उत्तर: (a)

18. 18. Proteins of animal origin lack

    • (a) D-amino acid
    • (b) Nitrogen
    • (c) Phosphorus
    • (d) Sulphur
    उत्तर देखें

    उत्तर: (a)

19. 19. Formation of gametes in the gonads is known as

    • (a) Spermatogenesis
    • (b) Oogenesis
    • (c) Gametogenesis
    • (d) Genesis
    उत्तर देखें

    उत्तर: (c)

20. 20. A dwarf shoot with two needles is found in

    • (a) Pinus gerardiana
    • (b) Pinus longifolia
    • (c) Pinus monophyla
    • (d) Pinus Sylvestris
    उत्तर देखें

    उत्तर: (d)

21. 21. Which of the following statements is not true regarding Amphioxus ?

    • (a) Notochord persists throughout life
    • (b) Nerve cord dorsal to notochord
    • (c) Brain absent; very little cephalization
    • (d) Free swimming organism
    उत्तर देखें

    उत्तर: (a)

22. 22. Of the following who coined the word Hormone ?

    • (a) Charles Darwin
    • (b) A. R. Wallace
    • (c) E. H. Starling
    • (d) A. Weismann
    उत्तर देखें

    उत्तर: (c)

23. 23. Which wood is used in making railway sleepers ?

    • (a) Shorea robusta
    • (b) Morus alba
    • (c) Madhuca indica
    • (d) All
    उत्तर देखें

    उत्तर: (a)

24. 24. In the absence of carbon dioxide the earth will be

    • (a) As hot as Thar desert
    • (b) As cold as moon
    • (c) As green as rain forest
    • (d) None of the above
    उत्तर देखें

    उत्तर: (b)

25. 25. Floridean starch is the food reserve in

    • (a) Phaeophyceae
    • (b) Cyanophyceae
    • (c) Bacillariophyceae
    • (d) Rhodophyceae
    उत्तर देखें

    उत्तर: (d)

26. 26. Nucleolus is the site for synthesis of

    • (a) Protein
    • (b) Messenger RNA
    • (c) Transfer RNA
    • (d) Ribosomal RNA
    उत्तर देखें

    उत्तर: (d)

27. 27. Life cycle of Taenia is

    • (a) Monogenetic
    • (b) Digenetic
    • (c) Polygenetic
    • (d) Hexagenic
    उत्तर देखें

    उत्तर: (b)

28. 28. Most common mycobionts in lichen belong to

    • (a) Phycomycetes
    • (b) Basidiomycetes
    • (c) Ascomycetes
    • (d) Deuteromycetes
    उत्तर देखें

    उत्तर: (c)

29. 29. Respiratory Quotient (RQ) of organic acid is

    • (a) Zero
    • (b) One
    • (c) Less than one
    • (d) More than one
    उत्तर देखें

    उत्तर: (d)

30. 30. The number of genera in the cephalochordata is

    • (a) Two
    • (b) Three
    • (c) Four
    • (d) Five
    उत्तर देखें

    उत्तर: (a)

31. 31. How many chambers are present in heart of Frog ?

    • (a) 2
    • (b) 3
    • (c) 4
    • (d) 5
    उत्तर देखें

    उत्तर: (b)

32. 32. Carinal canal found in which part of Equisetum ?

    • (a) Protoxylem
    • (b) Phloem
    • (c) Cortex
    • (d) Pith
    उत्तर देखें

    उत्तर: (a)

33. 33. The digestive tract of human adult lacks _______ enzyme.

    • (a) Pepsin
    • (b) Lipase
    • (c) Rennin
    • (d) Trypsin
    उत्तर देखें

    उत्तर: (c)

34. 34. Mendel’s work of genetics was based upon which of the following ?

    • (a) Andulusian Fowl
    • (b) Oenothera Lamarkiana
    • (c) Pisum Sativum
    • (d) Drosophila
    उत्तर देखें

    उत्तर: (c)

35. 35. ‘Amber’ is a fossilized form of

    • (a) Petrified plant organ
    • (b) Leaf coal
    • (c) Hardened resinous secretion
    • (d) Pseudofossil
    उत्तर देखें

    उत्तर: (c)

36. 36. Sometimes a single gene defect produces many secondary effects. This is called

    • (a) Polytropy
    • (b) Pleiotropy
    • (c) Homotropy
    • (d) Heterotropy
    उत्तर देखें

    उत्तर: (b)

37. 37. The incubation period in chick lasts for about how many days ?

    • (a) 11
    • (b) 21
    • (c) 24
    • (d) 31
    उत्तर देखें

    उत्तर: (b)

38. 38. Beverage yielding plant Coffea arabica is a member of the family

    • (a) Apocynaceae
    • (b) Rubiaceae
    • (c) Acanthaceae
    • (d) Solanaceae
    उत्तर देखें

    उत्तर: (b)

39. 39. Which of the following is a secondary air pollutant ?

    • (a) Methane
    • (b) Benzene
    • (c) Ozone
    • (d) Carbon dioxide
    उत्तर देखें

    उत्तर: (c)

40. 40. Property of nitrogen fixation is found in which given algae ?

    • (a) Cyanophyta
    • (b) Chlorophyta
    • (c) Rhodophyta
    • (d) Phaeophyta
    उत्तर देखें

    उत्तर: (a)

41. 41. _______ was not given by Darwin.

    • (a) Pangenesis theory
    • (b) Mutation theory
    • (c) Both
    • (d) None
    उत्तर देखें

    उत्तर: (b)

42. 42. In Nereis, the blood is pumped by

    • (a) Heart
    • (b) Dorsal blood vessel
    • (c) Ventral blood vessel
    • (d) Capillary
    उत्तर देखें

    उत्तर: (b)

43. 43. Which of the following is called as “Wolf Moss” ?

    • (a) Cetraria Islandica
    • (b) Cladonia Rangiferina
    • (c) Lecanora Esculenta
    • (d) Letharea Vulpina
    उत्तर देखें

    उत्तर: (d)

44. 44. Red drop effect was studied by

    • (a) Van Niel
    • (b) Blink
    • (c) Emerson
    • (d) Calvin
    उत्तर देखें

    उत्तर: (c)

45. 45. Which of the following substance is fibrinolytic ?

    • (a) Hemin
    • (b) Thrombin
    • (c) Plasmin
    • (d) Prothrombin
    उत्तर देखें

    उत्तर: (c)

46. 46. The excretory organ of Herdmania is

    • (a) Green gland
    • (b) Coxal gland
    • (c) Neural gland
    • (d) Organ of Bojans
    उत्तर देखें

    उत्तर: (c)

47. 47. Rhizosphere is neither a root nor a shoot but it is an “organ sui-generis” according to scientist

    • (a) Van Teighem
    • (b) Trueb
    • (c) Harvey Gibson
    • (d) Bower and Goebel
    उत्तर देखें

    उत्तर: (d)

48. 48. Which of the following statements is true regarding enzymes ?

    • (a) All require a coenzyme for their activity.
    • (b) All are active at neutral pH.
    • (c) All require a molecule of water for their activity.
    • (d) All lower the energy of activation.
    उत्तर देखें

    उत्तर: (d)

49. 49. “Passing of like qualities from one generation to the next” is the definition of which of the following ?

    • (a) Variation
    • (b) Hereditary
    • (c) Heredity
    • (d) Inheritance
    उत्तर देखें

    उत्तर: (c)

50. 50. In Pinus, pollengrains dehisces at

    • (a) 2-celled stage
    • (b) 3-celled stage
    • (c) 4-celled stage
    • (d) 5-celled stage
    उत्तर देखें

    उत्तर: (c)

51. 51. Match List – I with List – II and select the correct answer using the codes given below. List-I — List-II a. Neomorph — 1. Interchromosomal rearrangement b. Epistatic gene — 2. Masking the action of another gene c. Codominance — 3. Produce a phenotype different from the wild gene d. Translocation — 4. A character controlled by two genes Code : a b c d

    • (a) 3 2 4 1
    • (b) 2 1 4 3
    • (c) 4 2 1 3
    • (d) 3 4 2 1
    उत्तर देखें

    उत्तर: (a)

52. 52. Of the following which is not the zoogeographic realm ?

    • (a) Megagea
    • (b) Neogea
    • (c) Notogea
    • (d) Palaearctic
    उत्तर देखें

    उत्तर: (d)

53. 53. Peppermint is obtained from

    • (a) Oscimum tenuiflorum
    • (b) Trachyspermum ammi
    • (c) Cuminum cyminum
    • (d) Mentha piperita
    उत्तर देखें

    उत्तर: (d)

54. 54. Of the following leucosolenia belongs to which class ?

    • (a) Calcarea
    • (b) Hexactinellida
    • (c) Demospongia
    • (d) Homocoela
    उत्तर देखें

    उत्तर: (a)

55. 55. If the thallus of an organism e.g. a fungus is entirely converted into one or more reproductive structures it is called as

    • (a) Eucarpic
    • (b) Holocarpic
    • (c) Holozoic
    • (d) Homothallic
    उत्तर देखें

    उत्तर: (b)

56. 56. Watson and Crick model of DNA is

    • (a) A Type
    • (b) B Type
    • (c) C Type
    • (d) Z Type
    उत्तर देखें

    उत्तर: (b)

57. 57. Of how many segments is Hirudinaria granulosus is made of ?

    • (a) 23
    • (b) 33
    • (c) 43
    • (d) 53
    उत्तर देखें

    उत्तर: (b)

58. 58. Lichens are good indicator of

    • (a) Water pollution
    • (b) Air pollution
    • (c) Soil pollution
    • (d) None of the above
    उत्तर देखें

    उत्तर: (b)

59. 59. _______ is the interaction in which one species is benefitted and the other is neither harmed nor benefitted.

    • (a) Commensalism
    • (b) Mutualism
    • (c) Parasitism
    • (d) Predation
    उत्तर देखें

    उत्तर: (a)

60. 60. Volume of air inspired or expired during a normal respiration is termed as

    • (a) Tidal volume
    • (b) Residual volume
    • (c) Vital capacity
    • (d) Inspiratory reserve volume
    उत्तर देखें

    उत्तर: (a)

61. 61. In Scoleodon how many pairs of cranial nerves are present ?

    • (a) 9
    • (b) 10
    • (c) 11
    • (d) 12
    उत्तर देखें

    उत्तर: (b)

62. 62. A Siphonostele with non-overlapping (scattered) leaf gaps is called

    • (a) Meristele
    • (b) Eustele
    • (c) Solenostele
    • (d) Dictyostele
    उत्तर देखें

    उत्तर: (c)

63. 63. Statocyst of prawn is found in the

    • (a) Precoxa of antennule
    • (b) Coxa of antenna
    • (c) Coxa of antennule
    • (d) Coxa of mandible
    उत्तर देखें

    उत्तर: (a)

64. 64. Node of Ranvier are found on

    • (a) Cyton
    • (b) Axon
    • (c) Dendrite
    • (d) Synapse
    उत्तर देखें

    उत्तर: (b)

65. 65. The other name of phellogen is

    • (a) Cork Cambium
    • (b) Secondary Cortex
    • (c) Cork
    • (d) None
    उत्तर देखें

    उत्तर: (a)

66. 66. Which of the following is not a filter feeder ?

    • (a) Unio
    • (b) Amphioxus
    • (c) Herdmania
    • (d) Asterias
    उत्तर देखें

    उत्तर: (d)

67. 67. In Bacteria, when many flagella present only at one pole, are known as

    • (a) Monotrichous
    • (b) Amphitrichous
    • (c) Lophotrichous
    • (d) Peritrichous
    उत्तर देखें

    उत्तर: (c)

68. 68. In a trisomic, the polyploid chromosome is

    • (a) 2n − 1
    • (b) 2n − 2
    • (c) 2n + 1
    • (d) 2n + 2
    उत्तर देखें

    उत्तर: (c)

69. 69. In Pila how many teeth are present in each row of radula ?

    • (a) 21112
    • (b) 11112
    • (c) 10112
    • (d) 10012
    उत्तर देखें

    उत्तर: (a)

70. 70. Mosses and Ferns produce multicellular embryo within

    • (a) Antheridium
    • (b) Embryo sac
    • (c) Oogonium
    • (d) Archegonium
    उत्तर देखें

    उत्तर: (d)

71. 71. Alluvial soil is a type of

    • (a) Zonal soil
    • (b) Azonal soil
    • (c) Intrazonal soil
    • (d) None
    उत्तर देखें

    उत्तर: (b)

72. 72. General life cycle has the sequence

    • (a) 1N → Meiosis → 2N → Fertilization → 1N
    • (b) 2N → Meiosis → 1N → Fertilization → 2N
    • (c) 1N → Mitosis → 2N → Fertilization → 1N
    • (d) 2N → Mitosis → 1N → Fertilization → 2N
    उत्तर देखें

    उत्तर: (b)

73. 73. Of the following who challenged the Lamarkian theory ?

    • (a) Charles Darwin
    • (b) Hugo de Vries
    • (c) A. Weismann
    • (d) H. Spencer
    उत्तर देखें

    उत्तर: (c)

74. 74. Lodicule in family Graminae represents

    • (a) Leaf
    • (b) Bract
    • (c) Pedicel
    • (d) Perianth
    उत्तर देखें

    उत्तर: (d)

75. 75. Rhopalium of Aurelia is also called as

    • (a) Nematocyst
    • (b) Tentaculocyst
    • (c) Lappets
    • (d) Indentations
    उत्तर देखें

    उत्तर: (b)

76. 76. Multicellular rhizoids are found in

    • (a) Riccia
    • (b) Marchantia
    • (c) Funaria
    • (d) None
    उत्तर देखें

    उत्तर: (c)

77. 77. The alleles of a gene do not show any blending and both the characters are recovered as such in the F₂ generation. This statement is

    • (a) Law of Dominance
    • (b) Law of Segregation
    • (c) Law of Independent Assortment
    • (d) Law of Natural Selection
    उत्तर देखें

    उत्तर: (b)

78. 78. Bacteriophage was discovered by

    • (a) Lworf, Horne and Tournier
    • (b) F. W. Twort and Felix d’Herelle independently
    • (c) D. J. Iwonowski
    • (d) Beijerinck
    उत्तर देखें

    उत्तर: (b)

79. 79. The parasympathetic nervous system does not

    • (a) Slow heart beat
    • (b) Constrict bronchioles
    • (c) Stimulate salivary secretion
    • (d) Stimulate peristalsis
    उत्तर देखें

    उत्तर: (b)

80. 80. Medulary bundles are present in many plants, except

    • (a) Mirabilis
    • (b) Bougainvillea
    • (c) Amaranthus
    • (d) Nyctanthus
    उत्तर देखें

    उत्तर: (d)

81. 81. The spermatozoids of cycas are

    • (a) Top-shaped, multiciliated
    • (b) Biciliated
    • (c) Non-ciliated
    • (d) All of the above
    उत्तर देखें

    उत्तर: (a)

82. 82. The pecten of Columba (Pigeon) is derived from

    • (a) Choroid
    • (b) Retina
    • (c) Sclera
    • (d) Lens
    उत्तर देखें

    उत्तर: (a)

83. 83. Double circulation and double respiration is found respectively in

    • (a) Scoliodon and Rana
    • (b) Oryctolagus and Columba
    • (c) Uromastix and Rana
    • (d) Rana and Columba
    उत्तर देखें

    उत्तर: (b)

84. 84. Inflorescence of family lamiaceae is

    • (a) Dichasial cyme
    • (b) Verticillaster
    • (c) Both (A) and (B)
    • (d) Cymose
    उत्तर देखें

    उत्तर: (c)

85. 85. The body of the Tadpole larva shows distinct

    • (a) Head
    • (b) Trunk
    • (c) Tail
    • (d) All of the above
    उत्तर देखें

    उत्तर: (d)

86. 86. The hind wings of housefly are modified into little halteres. During flight these

    • (a) Do not beat
    • (b) Beat at same rate as fore wings
    • (c) Beat faster than fore wings
    • (d) Beat slower than fore wings
    उत्तर देखें

    उत्तर: (c)

87. 87. The embryo sac is bounded by the wall of _______.

    • (a) Megasporophyll
    • (b) Endosperm
    • (c) Megasporangium
    • (d) Megaspore
    उत्तर देखें

    उत्तर: (c)

88. 88. The virion is

    • (a) Nucleocapsid
    • (b) Capsid
    • (c) Nucleic acid
    • (d) None of the above
    उत्तर देखें

    उत्तर: (a)

89. 89. Which of the following hormones does not bind to cell-surface receptors ?

    • (a) T S H
    • (b) P T H
    • (c) F S H
    • (d) Testosterone
    उत्तर देखें

    उत्तर: (d)

90. 90. Which of the following is an example of analogy ?

    • (a) Sweet potato and potato
    • (b) Thorn of Bougainvillea and tendril of cucurbitaceae
    • (c) Both
    • (d) None
    उत्तर देखें

    उत्तर: (a)

91. 91. Branched conidiophore is found in

    • (a) Penicillium
    • (b) Rhizopus
    • (c) Ustilago
    • (d) Saccharomyces
    उत्तर देखें

    उत्तर: (a)

92. 92. Paramecin is produced by which particle of Paramecium ?

    • (a) Kappa
    • (b) Pi
    • (c) Mu
    • (d) Lambda
    उत्तर देखें

    उत्तर: (a)

93. 93. What determines the diffusion of water from one cell to other ?

    • (a) OP
    • (b) WP
    • (c) DPD
    • (d) TP
    उत्तर देखें

    उत्तर: (c)

94. 94. Fruits are not produced in Gymnosperms because they are

    • (a) Without pollination
    • (b) Without fertilization
    • (c) Seedless plants
    • (d) Without any ovary
    उत्तर देखें

    उत्तर: (d)

95. 95. What is the dental formula of Rabbit ?

    • (a) i 1/1, c 1/1, p 3/3, m 3/3
    • (b) i 1/1, c 1/1, p 2/2, m 3/3
    • (c) i 2/1, c 0/0, p 3/2, m 3/3
    • (d) i 2/2, c 0/0, p 3/3, m 2/2
    उत्तर देखें

    उत्तर: (c)

96. 96. Which of the following parts of the mammalian nephron is found in renal medulla ?

    • (a) Glomerulus
    • (b) Distal convoluted tubule
    • (c) Proximal convoluted tubule
    • (d) Loop of Henle
    उत्तर देखें

    उत्तर: (d)

97. 97. The type of phyllotaxi in Nerium sp. is

    • (a) Distichous
    • (b) Pentastichous
    • (c) Octostichous
    • (d) Whorled
    उत्तर देखें

    उत्तर: (d)

98. 98. Relationship between producers and consumers of different orders are called

    • (a) Food chain
    • (b) Food web
    • (c) Food cycle
    • (d) Both (B) and (C)
    उत्तर देखें

    उत्तर: (a)

99. 99. In cockroach, the endoskeletal structure, tentorium is found in the

    • (a) Mandibles
    • (b) Thorax
    • (c) Abdomen
    • (d) Head
    उत्तर देखें

    उत्तर: (d)

100. 100. In eukaryotic cell, the arrangement of axonemal microtubules in _______ is referred to as the 9 + 2 array.

     • (a) Cillia
     • (b) Flagella
     • (c) Both
     • (d) None
     उत्तर देखें

     उत्तर: (c)

101. 101. Methanogenic bacteria belong to

     • (a) Mycoplasma
     • (b) Eubacteria
     • (c) Cyanobacteria
     • (d) Archebacteria
     उत्तर देखें

     उत्तर: (d)

102. 102. Which of the following is an essential fatty acid ?

     • (a) Acetic acid
     • (b) Propionic acid
     • (c) Palmitic acid
     • (d) Linoleic acid
     उत्तर देखें

     उत्तर: (d)

103. 103. Hardy-Weinberg equilibrium is affected by

     • (a) Mutation
     • (b) Natural selection
     • (c) None
     • (d) Both
     उत्तर देखें

     उत्तर: (d)

104. 104. The species of Puccinea that causes Yellow Rust of wheat is

     • (a) P. helianthii
     • (b) P. purpuria
     • (c) P. striiformis
     • (d) P. recondita
     उत्तर देखें

     उत्तर: (c)

105. 105. Of the following Euglena belongs to which class ?

     • (a) Phytomastigophora
     • (b) Zoomastigophora
     • (c) Rhizopoda
     • (d) Actinopoda
     उत्तर देखें

     उत्तर: (a)

106. 106. Obliquely placed ovary, epipetalous condition and axile placentation is found in

     • (a) Liliaceae
     • (b) Graminae
     • (c) Solanaceae
     • (d) Malvaceae
     उत्तर देखें

     उत्तर: (c)

107. 107. Of the following who started the study of Geographical distribution of animals ?

     • (a) P. L. Sclater
     • (b) A. R. Wallace
     • (c) C. Darwin
     • (d) H. Spencer
     उत्तर देखें

     उत्तर: (b)

108. 108. The formation of gonads in Hydra is stimulated by

     • (a) Lack of oxygen
     • (b) Abundance of carbon dioxide
     • (c) c-AMP
     • (d) Alanine
     उत्तर देखें

     उत्तर: (b)

109. 109. Gram-positive Bacteria are characterised by

     • (a) Presence of Techoic acid in cell wall
     • (b) High percentage of peptidoglycans in cell wall
     • (c) Low percentage of Lipid
     • (d) All of the above
     उत्तर देखें

     उत्तर: (d)

110. 110. Which is a bisporic type embryo sac ?

     • (a) Polygonum
     • (b) Oenothora
     • (c) Allium
     • (d) Adoxa
     उत्तर देखें

     उत्तर: (c)

111. 111. Globular proteins do not act as

     • (a) Enzyme
     • (b) Structural molecule
     • (c) Hormone
     • (d) Antibody
     उत्तर देखें

     उत्तर: (b)

112. 112. In family caryophylaceae, placentation is

     • (a) Free central
     • (b) Parietal
     • (c) Basal
     • (d) Axile
     उत्तर देखें

     उत्तर: (a)

113. 113. The partially isolated populations are known as

     • (a) Clone
     • (b) Deme
     • (c) Hybrid
     • (d) Niche
     उत्तर देखें

     उत्तर: (b)

114. 114. Number of testes found in adult Ascaris is

     • (a) 6
     • (b) 2
     • (c) 1
     • (d) 3
     उत्तर देखें

     उत्तर: (c)

115. 115. Which of the following statement is not correct ?

     • (a) Auxins are effective in producing parthenocarpic fruit.
     • (b) Parthenocarpic fruits are seedless.
     • (c) Only gibberellins are effective in producing parthenocarpic fruit.
     • (d) Parthenocarpy escapes fertilization.
     उत्तर देखें

     उत्तर: (c)

116. 116. On the basis of the amount of yolk and its distribution, the eggs of frog are

     • (a) Microlecithal and centrolecithal
     • (b) Polylecithal and isolecithal
     • (c) Mesolecithal and telolecithal
     • (d) Mesolecithal and isolecithal
     उत्तर देखें

     उत्तर: (c)

117. 117. In Pheretima, the septal nephridia are found in all septa behind _______ segments.

     • (a) 14/15
     • (b) 4/6
     • (c) 1/2
     • (d) 9/10
     उत्तर देखें

     उत्तर: (a)

118. 118. Which of the following statement is false regarding Bryophyta ?

     • (a) They are photosynthetic.
     • (b) Their spores germinate producing ganetophyte.
     • (c) Zygote undergoes meiosis.
     • (d) They lac vascular tisses.
     उत्तर देखें

     उत्तर: (c)

119. 119. The _______ of Puccinia graminis is formed on wheat.

     • (a) Basidiospore
     • (b) Uredospore
     • (c) Pycniospore
     • (d) Acciospore
     उत्तर देखें

     उत्तर: (b)

120. 120. Which of the following codons usually codes for valine but can also code for formylated-methionine as initiator codon ?

     • (a) G U G
     • (b) U G A
     • (c) U G U
     • (d) A G U
     उत्तर देखें

     उत्तर: (a)

121. 121. In Sycon which type of canal system is found ?

     • (a) Ascon
     • (b) Sycon
     • (c) Leucon
     • (d) Rhagon
     उत्तर देखें

     उत्तर: (b)

122. 122. In embryo sac, filiform apparatus is found in

     • (a) Egg cell
     • (b) Central cell
     • (c) Antipodal cell
     • (d) Synergid cell
     उत्तर देखें

     उत्तर: (d)

123. 123. Which one of the following is a double-stranded RNA (ds-RNA) virus ?

     • (a) Rotavirus
     • (b) Influenza virus
     • (c) Tospovirus
     • (d) Rhabdovirus
     उत्तर देखें

     उत्तर: (a)

124. 124. Theory of origin of species by natural selection was given by

     • (a) Charles Darwin
     • (b) A. Wallace
     • (c) A. Weismann
     • (d) H. Spencer
     उत्तर देखें

     उत्तर: (a)

125. 125. The relationship between mosquito and malaria was discovered by

     • (a) Ronald Ross
     • (b) Pasteur
     • (c) William Harvey
     • (d) Needham
     उत्तर देखें

     उत्तर: (a)