Segmentation was first apparent in the
A. annelids.
B. vertebrates.
C. chordates.
D. flatworms.
Answer: A
Biology & Microbiology
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Explain why grandsons of boys who survived a famine lived longer than grandsons of boys who did
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Groups of tissues that function together form a(n)
A) system. B) individual. C) gland. D) organ. E) organ system.
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the __ is an example of the female external genitalia
Fill in the blank(s) with the appropriate word(s).
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Which of these molluscs commonly have a hinged shell?
A) gastropods only B) bivalves only C) cephalopods only D) gastropods and bivalves
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