(IGP) IAS Pre: GS - Science & Technology : Biology - The Nervous System (MCQ - 4)

1. Consider the following statements.
(A) The Central Nervous System includes the brain & the spinal cord.
(B) The peripheral Nervous system vondidy consist of all body nervous.
(C) Not all animals have a highly specialized nervous system.

Which of the above are true?
(A) A& B
(B) B & C
(C) A only
(D) All of the above

2. Consider the following statements.
(A) Coelenterates, cnidarians& Echinoderms have their neurons organised into a nerve net.
(B) These creatures have radial symmetry & lack a head.
(C) Although lacking a brain a central nervous system they are capable of complex behavior.

Which of the above are false?
(A) A only
(B) B & C
(C) A, B & C
(D) None of the above

3. Consider the following statements.
(A) Flatworms have neurons associated into cluster known as ganglia which form a small brain.
(B) Vertebrates have a spinal cord in addition to a more developed brain.
(C) Chordates have a dorsal rather than what nervous system.

Which of the above are correct?
(A) A& C
(B) B only
(C) C only
(D) All of the above

4. Consider the following statements.
(A) The peripheral nervous system contains only nerves & connect the brain and he spinal cord to the rest of the body.
(B) Sensory pathways carry signals to muscles & glands.
(C) Motor pathways provide of input from the body unit into the CNS (Central Nervous System).

Which of the above are not correct?
(A) A& B
(B) B & C
(C) A only
(D) B only

5. Which of the following are correct?
(A) Axons dendrites surrounded by white myelin sheath.
(B) Cranial nerves the take impulse to & from the brain.
(C) Spinal nervous take impulses to & away from spinal cord.

(A) C only
(B) B & C only
(C) None of the above
(D) All of the above

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