A) Flat worms
B) Sponges
C) Ctenophores
D) Corals
Correct Answer: A
Solution :
Flatworms (phylum-Platyhelminthes) are triploblastic animals. The cells of the body wall are arranged, in three layers. Sponges, ctenophores and corals are diploblastic animals.You need to login to perform this action.
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