Segmentation was first apparent in the

A. annelids.
B. vertebrates.
C. chordates.
D. flatworms.


Answer: A

Biology & Microbiology

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Groups of tissues that function together form a(n)

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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?

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