MCQs Biology F.Sc. Part 2 ( 2nd Year )
Chapter No.17
Coordination and Control
Total MCQs = 219
All MCQs taken from Old MDCAT Tests
121. If plants are grown without light, they become extremely long and fail to form chlorophyll. They are said to be:
(A) Callus
(B) Chlorotic
(C) Galls
(D) Etiolated
Answer:
(D) Etiolated
122. Which of the following is not a function of auxins?
(A) Promote stomata opening
(B) Promote apical dominance and fruit growth 400
(C) Promote cell division in cambium
(D) Cause delay in leaf senescence
Answer:
(A) Promote stomata opening
123. Nociceptors produce the sensation of:
(A) Taste
(B) Pain
(C) Hearing
(D) Light
Answer:
(B) Pain
124. Receptors of the following senses are present in the skin:
(A) Heat, cold and pain
(B) Touch, pressure, cold, heat and pain
(C) Touch pressure and pain
(D) Touch and pressure
Answer:
(B) Touch, pressure, cold, heat and pain
125. The cytoplasmic processes conducting impulses away from cell body of neuron are termed as:
(A) Dendrites
(B) Myelin
(C) Axon
(D) Syanpse
Answer:
(C) Axon
126. Which of the following ions present in the nerve cells and surrounding fluid are the most important in conduction of nerve impulse?
(A) Na+ and K.+M
(B) Na+ and Mg++
(C) K+ and Mg++
(D) Mg++ and Ca++
Answer:
(A) Na+ and K.+M
127. Which of the following is an example of neurotransmitter?
(A) Dopamin
(B) Serotonin
(C) Acetylcholine
(D) ALL of the above
Answer:
(D) ALL of the above
128. In human, forebrain is further divided into:
(A) Thalamus and limbic system
(B) Cerebrum, limbic system and thalamus
(C) Thalamus and cerebrum
(D) Cerebrum and limbic system
Answer:
(B) Cerebrum, limbic system and thalamus
129. In humans, amygdala, hippocampus and nearby region of cerebrum:
(A) Thalamus, amygdala, hippocampus and nearby region of cerebrum
(B) Thalamus, amygdala, hippocampus and nearby region of cerebrum
(C) Thalamus, hypothalamus and hippocampus
(D) Thalamus, hypothalamus and amygdala
Answer:
(B) Thalamus, amygdala, hippocampus and nearby region of cerebrum
130. Which of the following is a controlling function of hypothalamus?
(A) Swallowing
(B) Vision
(C) Memory
(D) Water balance
Answer:
(D) Water balance
