1. What does the passage mainly discuss?
(A) The parts of a neuron
(B) The structure of animals' nerve
(C) The nervous system of vertebrates
(D) The development of the brain
2. According to the passage , the nerve cord of vertebrates is
(A) large
(B) hollow
(C) primitive
(D) embryological
3. The author implies that a careful investigation of a biological structure in an embryo may
(A) Improved research of the same structure in other species
(B) A better understanding of the fully developed structure
(C) Discovering ways in which poor development can be corrected
(D) A method by which scientists can document the various stages of development
4. The two main parts of the central nervous system are the brain and the
(A) sensory endings
(B) cranial nerve
(C) spinal cord
(D) peripheral nerves
5. All of the following are described as being controlled by the autonomic nervous system EXCEPT
(A) connective tissue
(B) cardiac muscle
(C) glandular activity
(D) smooth muscle
6. In what lines does the author identify certain characteristic of nerve cells?
(A) lines 1-2
(B) lines 9-12
(C) lines 12-14
(D) lines 16-18
PASSAGE 44 CBBCA D
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