Question

Mainly aquatic, with two pair " Crustacea D Question 2 Whic one of these chordate groups lacks both a post-anal tail and a notochord as adults? Mammalia Cephalochordata Urochordata Amphibia D Question 3 Type here to search о в ее пав DOLL

Answer 1

The chordates group that lacks both the post anal tail and notochord as adults : Urochordata

Urochordata 1600 species are also known as tunicates that belong to phylum urochordata. The name tunicate is derived from tunic which is cellulose in structure.

Usually chordates like mammalia, amphibians and cephalochordata possess four characteristic features like pharyngeal slit, notochord, post anal tail and dorsal hallow nerve cord.

But the larvae stage of urochordata species contain all the above characteristic features but lose their post anal tail and notochord in their adult stage.