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

From my knowledge I mostly think its Thalilacea

I think this because even though it can be Appendicularia too, Thalilacea has BOTH a tail and notochord in the adult stage

Answer 2

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 :)