Question 69

(Multiple Choice)

Use the following information to answer the questions 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 to lie in the grooves between larger,underlying cells (i.e.,spiral cleavage).
-This embryo may potentially develop into a(n)


A)turtle.
B)earthworm.
C)sea star.
D)fish.
E)sea urchin.

Answer