Why are developmental biologists especially interested in studying echinoderm embryos?
A) Echinoderms are primitive chordates.
B) Echinoderms are the closest living relatives of chordates.
C) Echinoderms are the only animals with three embryonic germ layers.
D) Echinoderms, unlike most invertebrates, retain their notochords as adults.
E) Echinoderms, like chordates, are protostomes.

Question

Quizplus · Accepted Answer

Echinoderms are of particular interest to developmental biologists because they are the closest living relatives of chordates, which includes humans. This relationship helps scientists understand the evolutionary development of more complex organisms.

Why Are Developmental Biologists Especially Interested in Studying Echinoderm Embryos