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° and to lie in the grooves between larger, underlying cells. Which of the following organisms is this embryo most likely to develop into?
A) turtle
B) earthworm
C) sea star
D) sea urchin

Question

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The Answer of 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° and to lie in the grooves between larger, underlying cells. Which of the following organisms is this embryo most likely to develop into?
A) turtle
B) earthworm
C) sea star
D) sea urchin

A Student Encounters an Animal Embryo at the Eight-Cell Stage