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    Life The Science of Biology Study Set 1
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    Exam 50: Circulatory Systems
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    A Cardiovascular System Is Not Necessary in the Hydra Because
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A Cardiovascular System Is Not Necessary in the Hydra Because

Question 34

Question 34

Multiple Choice

A cardiovascular system is not necessary in the hydra because the hydra


A) is an aquatic animal.
B) has no skeleton.
C) is only two cells thick.
D) has tentacles to move water.
E) does not move rapidly.

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