Coordination And Control In Animals(Biology ) Questions and Answers

Question 1. Main transmitter for synapses that lie outside central nervous system is
  1.    serotonin
  2.    adrenaline
  3.    acetylcholine
  4.    dopamine
Explanation:-
Answer: Option C. -> acetylcholine
Answer: (c).acetylcholine
Question 2. When an impulse reaches a synaptic knob, synaptic vesicles fuse with the
  1.    pre-synaptic membrane
  2.    post-synaptic membrane
  3.    synaptic cleft
  4.    neurotransmitters
Explanation:-
Answer: Option A. -> pre-synaptic membrane
Answer: (a).pre-synaptic membrane
Question 3. Outer layer of adrenal gland is called
  1.    adrenal cortex
  2.    adrenal medulla
  3.    cortex
  4.    medulla
Explanation:-
Answer: Option A. -> adrenal cortex
Answer: (a).adrenal cortex
Question 4. Medulla of adrenals produces hormone
  1.    adrenaline
  2.    nor-adrenaline
  3.    cortico-steroids
  4.    Both a and b
Explanation:-
Answer: Option D. -> Both a and b
Answer: (d).Both a and b
Question 5. Weed killing is done by
  1.    2,4 D
  2.    NAA
  3.    IAA
  4.    Ethane
Explanation:-
Answer: Option A. -> 2,4 D
Answer: (a).2,4 D
Question 6. Tactical movement is felt, when the impulse reaches the
  1.    midbrain
  2.    hindbrain
  3.    Medulla Oblongata
  4.    cerebrum
Explanation:-
Answer: Option D. -> cerebrum
Answer: (d).cerebrum
Question 7. Impulses are carried from receptors to CNS and then to
  1.    spinal cord
  2.    organs
  3.    effectors
  4.    conductors
Explanation:-
Answer: Option C. -> effectors
Answer: (c).effectors
Question 8. The process in which activation or inhibition of an enzyme by a small regulatory molecule is called
  1.    enzyme control
  2.    allosteric control
  3.    Specificity control
  4.    Enzyme action
Explanation:-
Answer: Option B. -> allosteric control
Answer: (b).allosteric control
Question 9. Involuntary actions are controlled by
  1.    Midbrain
  2.    Cerebellum
  3.    Medulla Oblongata
  4.    Hypothalamus
Explanation:-
Answer: Option C. -> Medulla Oblongata
Answer: (c).Medulla Oblongata
Question 10. In enzymes the allosteric control changes the
  1.    nature of enzyme
  2.    shape of enzyme
  3.    physical properties of enzyme
  4.    chemical properties of enzyme
Explanation:-
Answer: Option B. -> shape of enzyme
Answer: (b).shape of enzyme
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