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(MCQ) General Science: The Nervous System

1. 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 behaviour.

Which of the above are false?

1. A only
2. B & C only
3. A, B & C
4. None of the above

2. 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?

1. A & C only
2. B only
3. C only
4. All of the above

3. 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?

1. A & B only
2. B & C only
3. A only only
4. B only

4. 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.

1. C only
2. B & C only
3. None of the above
4. All of the above

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