Why are developmental biologists so 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

Developmental biologists are interested in studying echinoderm embryos because echinoderms are the closest living relatives of chordates. By comparing the development of echinoderms to that of chordates, scientists can gain insights into the evolution of developmental processes and the origin of certain features in chordates.

Why Are Developmental Biologists So Interested in Studying Echinoderm Embryos