Question

Closed type of circulatory system is seen in ( )
A) cephalochordates
B) annelids
C)echinoderms
D) all of these

Answer 1

All ot the above


Most vertebrates and some invertebrates, such as this annelid earthworm,

Cephalocordates and echinoderm are sub phylum of cordates

Chordates are eucoelomate deuterostomes, and probably share a common ancestor with echinoderms.

Chordates are eucoelomate deuterostomes, and probably share a common ancestor with echinoderms.