31. Invertebrates
Porifera and Cnideria
1:08 minutes
Problem 8
Textbook Question
Textbook QuestionWhich of these choices is an example of homology (similarity due to common ancestry)? a. suspension feeding in sponges and clams b. ectoparasite lifestyle in aphids and ticks c. cnidocytes (stinging cells) in jellyfish and sea anemones d. radial symmetry in cnidarians and echinoderms
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