Multiple Choice
Enteropneusta and Pterobranchia are classes of animals within the phylum Hemichordata.Which of the following characters could be used to distinguish between members of these two classes?
A) Filter feeding vs.deposit feeding
B) Open vs.closed circulatory system
C) Presence or absence of pharyngeal slits
D) Dorsal vs.ventral nervous system
Correct Answer:
Verified
Correct Answer:
Verified
Q44: Acorn worms belong to the class<br>A)Ascidacea.<br>B)Concentricycloidea.<br>C)Pterobranchia.<br>D)Enteropneusta.<br>E)Thaliacea.
Q45: Exchange of respiratory gases in enteropneusts is
Q46: Enteropneusta are wormlike as adults and pterobranchia
Q47: The circulatory system of enteropneusts sends blood
Q48: Which of the following echinoderms may contain
Q50: When feeding on a bivalve,a sea star
Q51: In sea stars,thin folds of the body
Q52: The major secretory and absorptive structures of
Q53: In sea stars,the _ surface is the
Q54: Echinoderms from this class have been over