SAT Subject Biology Practice Question 85: Answer and Explanation

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Question: 85

15. Which tissue, formed during the gastrulation phase of embryonic development, later differentiates to form the nervous system?

A. Archenteron
B. Blastopore
C. Ectoderm
D. Endoderm
E. Mesoderm

Correct Answer: C

Explanation:

During embryonic development, three layers of tissue arise. The outermost layer is ectoderm, which develops into the nervous system, skin, and bones of the skull.

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