CONTROL AND COORDINATION MOCK TEST MCQ 03 / नियंत्रण और समन्वय मोक टेस्ट
51. Avena coleoptile test to find out growth promoting hormones was performed by :-
(A) Went (B) Lysenko (C) Butler (D) Borthwick
ANS : A
52. Which of the following effects of auxins is of wide application :-
(A) Induction of fruit development (B) Induction of root initiation
(C) Prevention of abscission (D) All of the above
ANS : D
53. Stem elongation is affected by :-
(A) Gibberellin and florigen (B) Auxin and gibberellin
(C) Florigen and kinin (D) Kinin and auxin
ANS : B
54. Apical dominance means :-
(A) Supression of growth of apical bud by axillary buds
(B) Supression of growth of axillary buds by the presence of apical bud
(C) Stimulation of growth of axillary buds by removal of apical bud
(D) Inhibition of growth of axillary buds by removal apical bud
ANS : B
55. Which of the following is not natural occurring plant hormone :-
(A) 2, 4-D (B) Cytokinin (C) Gibberellin (D) I.A.A
ANS : A
56. Parthenocarpy is the production of :-
(A) Fruits with pollination (B) Fruits without fertilization
(C) Seeds with fertilization (D) Only seeds and no fruits
ANS : B
57. Clinostat is used in study for :-
(A) Photosynthesis (B) Respiration (C) Geotropism (D) Osmosis
ANS : C
58. Phytohormone term was coined by :-
(A) Gregory and Purvis (B) F.W.Went (C) Thimann (D) L.J. Audus
ANS : C
59. Cytokinin :-
(A) Is a hormone whose main function is to induce the cell division
(B) Is the process of cell division
(C) Retards cell division
(D) Causes dormancy
ANS : A
60. Gibberellin was first extracted from :-
(A) Gibberella (B) Gellidium (C) Gracillaria (D) Aspergillus
ANS : A
61. Which of the following breaks the dormancy of seeds :-
(A) IAA (B) GA (C) Ethylene (D) All the above
ANS : B
62. Abscisic acid induces :-
(A) Shoot elongation (B) Cell elongation and cell wall formation
(C) Cell division (D) Leaf fall and dormancy
ANS : D
63. Which of the following is a hypothetical hormone :-
(A) Gibberellin (B) Auxin (C) Cytokinin (D) florigen
ANS : D
64. Which of the following is a growth inhibiter hormone :-
(A) Cytokinin (B) Gibberellin (C) Auxin (D) Abscisic acid
ANS : D
65. Mimosa (touch me not plant) shows :-
(A) Thigmotropism movement (B) Chemotactic movement
(C) Thigmonasty (D) Seismonasty
ANS : D
66. Phytohormones are
(A) hormones regulating growth from seed to adulthood
(B) hormones regulating secondary growth
(C) growth regulators synthesized by plants and influencing physiological processes
(D) hormones regulating flowering.
ANS : C
67. The natural plant hormones were first isolated from
(A) cotton fruits, spinach leaves, rice plant (B) avena coleoptiles, fungus gibberella
(C) corn germ oil, human urine (D) human urine, rice plant.
ANS : B
68. If the tip of a seeding is cut off, growth as well as bending ceases because it hampers
(A) perception of light stimulus (B) transpiration
(C) respiration (D) photosynthesis.
ANS : A
69. A plant bends towards the source of light when exposed to the light on only one side. Which of the following is the best explanation of the phenomena ?
(A) It needs light for photosynthesis
(B) The apices of their stems are attracted by light
(C) Some auxin accumulates on the shaded side to induce greater cell elongation on that side
(D) Light stimulates the cells on the illuminated side to increase in length
ANS : C
70. The movement of plant organs in response to the force of gravity is called
(A) hydrotropism (B) geotropism (C) heliotropism (D) phototropism
ANS : B
71. A high concentration of synthetic auxins is generally used for
(A) wee control (B) enhancing root initiation
(C) controlling of cell enlargement (D) preventing the growth of the lateral buds.
ANS : A
72. Gibberellic acid has been successfully employed to induce flowering
(A) in long day plants under short day conditions
(B) in short day plants under long day conditions
(C) for some plants
(D) none of the above
ANS : A
73. Cytokinins are known to
(A) inhibit cytoplamic movement (C) help in retention of chlorophyll
(C) influence water movement (D) promote abscission layer formation
ANS : B
74.. Ethylene is a
(A) solid hormone (B) gaseous enzyme (C) gaseous hormone (D) liquid gas mixture
ANS : C
75. Pineapple an be made to flower if off season by
(A) zeatin (B) ethylene (C) temperature (D) short days
ANS : B
76. The effect of daily light period on flowering is called
(A) photooxidation (B) phototropism (C) photoperiodism (D) photorespiration
ANS : C
77. Brain stem is formed by the union of
(A) optic lobes (B) cerebellum with optic lobes
(C) corpora striate (D) mid brain, ponsvarolli and medulla oblongata
ANS : D
78. Number of spinal nerves in man are
(A) 11 pairs (B) 13 pairs (C) 6 pairs (D) 31 pairs
ANS : D
79. Third ventricle occurs in
(A) cerebrum (B) cerebellum (C) medulla oblongata (D) diencephalon
ANS : D
80. The pineal body is considered as
(A) an endocrine gland (B) an organ concerned with voluntary actions
(C) an organ concerned with vision (D) a vestige of third eye and endocrine gland
ANS : D
81. Part of brain involved in interpretation, storage of information and initiation of response on the basis of past experience is
(A) motor area (B) cerebellum (C) sensory area (D) association area
ANS : D
82. Autonomic nervous system controls
(A) reflex action (B) sense organs (C) internal organs (D) skeletal muscle
ANS : C
83. The study of nervous system and its disorders is called
(A) neurogenesis (B) hematology (C) neuroglia (D) neurology
ANS : D
84. In reflex action the reflex arc is formed by
(A) brain
(C) muscle receptor
brain (D) muscles
spinal cord
receptor
ANS : B
85. The sensation of sight in human brain is perceived by
(A) optic lobe (B) occipital lobe (C) frontal lobe (D) parietal lobe
ANS : B
86. Phytohormones are
(A) Hormones regulating growth from seed to adult
(B) Hormones regulating secondary growth
(C) Growth regulators synthesized by plants influencing physiological process
(D) Hormones regulating flowering
ANS : C
87. The natural plant hormone were isolated from
(A) Cotton fruit, spinach, rich plant (B) Avena coleoptile, fungus gibberella
(C) Corn germ oil, human urine (D) None
ANS : C
88. If tip of seedling is cut off growth as well as bending ceases because it hampers
(A) Perception of light stimulus (B) Transpiration
(C) Respiration (D) Photosynthesis
ANS : A
89. The movement of plant organ in response to force of gravity is called
(A) Hydrotropism (B) Geotropism (C) Photo tropism (D) None
ANS : B
90. A high concentration of synthetic auxin is generally used for
(A) weed control (B) Root initiation (C) Prevent growth (D) All
ANS : A
91. Part of the neuron through which information travels as an electrical impulse is
(A) Dendrite (B) Axon (C) Cell body (D) Nerve ending
ANS : B
92. Arachnoid is
(A) Inner meninx (B) Middle meninx
(C) Outer meninx (D) Inner epithelial lining
ANS : B
93. Sympathetic nervous system
(A) Dilates pupil (B) Dilates bronchi
(C) Increases blood pressure (D) All the above
ANS : A
94. Audiovisual memory occurs in
(A) Frontal lobe (B) Parietal lobe (C) Temporal lobe (D) Occipital lobe
ANS : D
95. Neurolemma is formed by
(A) Schwann cells (B) Dendrites (C) Axolemma (D) Axoplasm
ANS : A
96. The sensory receptors in our body to detect smell are
(A) Auditory receptors (B) Gustatory receptors (C) Olfactory receptors (D) Tactile receptors
ANS : C
97. The chemicals that cross the synapse to start a similar electrical impulse in the next neuron are released from
(A) The dendritic tip (B) The cell body (C) The end of axon (D) The axon
ANS : C
98. Part of the neuron where information is acquired is
(A) Dendrite (B) Axon (C) Cell body (D) Nerve ending
ANS : A
99. Movement of pollen tube towards ovule is
(A) Chemotropism (B) Hydrotropism (C) Thigmotropism (D) none
ANS : A
100. Cytokinin are known to
(A) Inhibit cytoplasmic movement (B) Help in retention of chlorophyll
(C) Influence water movement (D) All
ANS : B
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