Which of the following phyla includes diploblastic, aquatic animals with tissue grade of organization?
A
Protozoa
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B
Porifera
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C
Cnidaria
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D
Helminthes
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Solution
The correct option is C Cnidaria Phylum Coelenterata (cnidaria) includes tentacle bearing, aquatic, acoelomate, diploblastic, radially symmetrical animals. The phylum Cnidaria is characterized by following characters:
(1) Members are mostly marine.
(2) Usually radially symmetrical in the adult stage.
(3) possess tissue level of body organization.
As the given characters represent the phylum Coelenterata (Cnidaria), Thus the option C is the correct answer.