Which of these,if true,would support the claim that the ancestral cnidarians had bilateral symmetry?
1)Cnidarian larvae possess anterior-posterior,left-right,and dorsal-ventral aspects.
2)Cnidarians have fewer Hox genes than bilaterians.
3)All extant cnidarians are diploblastic.
4)All cnidarians are acoelomate.

Question

Quizplus · Accepted Answer

Option 1 states that cnidarian larvae possess anterior-posterior, left-right, and dorsal-ventral aspects, which suggests bilateral symmetry. Option 2 suggests that cnidarians have fewer Hox genes than bilaterians, which is an indication that they may not have bilaterally symmetric body plans. Options 3 and 4 are incorrect as they do not provide any information about the symmetry of cnidarians.

Which of These,if True,would Support the Claim That the Ancestral