Members of which group are not deuterostomes?

Question

Members of which group are not deuterostomes? (A) Chordates (B) Echinoderms (C) Arthropods (D) None of these; all are deuterostomes

Tardigrade Admin · Accepted Answer

Deuterostomes in animals where first opening to develop in embryonic digestive tube is anus and mouth is formed later. Echinodermates and chordates have deuterostomic body plane while annelids, arthropod and molluscs have protostomic body plan.

Q. Members of which group are not deuterostomes?

Chordates

Echinoderms

Arthropods

None of these; all are deuterostomes

Deuterostomes in animals where first opening to develop in embryonic digestive tube is anus and mouth is formed later. Echinodermates and chordates have deuterostomic body plane while annelids, arthropod and molluscs have protostomic body plan.