A) Hydra
B) Liver fluke
C) Physalia
D) Obelia
Correct Answer: B
Solution :
Platyhelminthes are bilaterally symmetrical animals. The body of animal can be divided into two equal halves through only one plane, eg, liver fluke (.Fasciola hepatica). Coelenterates are radially symmetrical animals with tissue grade or organization, eg, Hydra, Physalia, Obelia etc.
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