Discover new perspectives and gain insights with IDNLearn.com's diverse answers. Join our community to receive prompt and reliable responses to your questions from knowledgeable professionals.

What do Porifera (sponges), Ctenophora (comb jellies) and Cnidaria (jellyfish, corals, anemones, and hydroids) have in common regarding symmetry?
a. They are all radially symmetric.
b. They are non-bilaterian.
c. They are all biradially symmetric.
d. They are bilaterally symmetric.