NEET 2009 Biology question

Which one of the following groups of animals is bilaterally symmetrical and triploblastic?

(1)Aschelminthes (round worms)Correct
(2)Ctenophores
(3)Sponges
(4)Coelenterates (Cnidarians)

Answer: (1)

Solution

Aschelminthes (roundworms) have bilateral symmetry and a body wall derived from three germ layers (triploblastic; with a pseudocoelom). Ctenophores and coelenterates

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Question ID VK-090191