Multiple Choice
The following questions are based on the description below.
A student encounters an animal embryo at the eight-cell stage. The four smaller cells that comprise one hemisphere of the embryo seem to be rotated 45 degrees and lie in the grooves between larger, underlying cells (spiral cleavage) .
-Which of the following organisms are deuterostomes?
A) molluscs
B) annelids
C) echinoderms
D) chordates
E) both C and D
Correct Answer:

Verified
Correct Answer:
Verified
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