93.7k views
1 vote
Chordates include all of these groups except:

a) hemichordates
b) tunicates
c) vertebrates
d) cephalochordates

User Busti
by
7.7k points

1 Answer

3 votes

Final answer:

Hemichordates are not members of the phylum Chordata; instead, they fall under the group Ambulacraria. Chordata includes vertebrates, tunicates, and lancelets, all of which share the presence of a notochord.

Step-by-step explanation:

The group that is not a member of the phylum Chordata is hemichordates. The phylum Chordata includes vertebrates as well as two invertebrate clades: Urochordata (tunicates) and Cephalochordata (lancelets). Although hemichordates share some characteristics with chordates, such as pharyngeal slits and a dorsal nerve cord, they lack a notochord, which is a defining characteristic of chordates. Instead, hemichordates belong to a different group called Ambulacraria, which also includes echinoderms.

User Dan Goldin
by
8.2k points