Annelids possess all of the following except
A. setae in each segment.
B. muscles to swim, crawl, and burrow.
C. adductor muscles.
D. ganglia to respond to light and respond to other environmental cues.
E. circulatory, excretory, and neural elements in each segment.
Answer: C
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During implantation, the __________ buries itself in the uterine wall
ANSWER: blastocyst Fill in the blank(s) with the appropriate word(s).
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