Question

4. Members of which of the following groups are planktonic as adults and possess a tail and notochord that persist into the adult stage?
A). Ascidiacea.
B). Thaliacea.
C). Appendicularia.
D). Enteropneusta.

Answer 1

Hi There!

Question -  Members of which of the following groups are planktonic as adults and possess a tail and chordate that persist into the adult stage?

Answer - B). Thaliacea.

Why - the reason I say its B is because the fact that they are free floating organism their entir life like bacteria.

Hope This Helps :)

Answer 2

The group that are planktonic as adults and possess a tail and notochord that persist into adulthood is : ( C ) Appendicularia

Appendicularia

Appendicularia is a class under the subphylum urochordata, they are planktonic with their adults lacking a cellulose tunic. Appendicularia possess a tail and notochord which is retained until adulthood. they also possess a gelatinous covering on their bodies.

Hence we can conclude that the group that are  planktonic as adults and possess a tail and notochord that persist into adulthood is Appendicularia

Learn more about Notochord : https://brainly.com/question/433135