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Question

Select the incorrect pair from the following
A. Adamsia - Sea anemone
B. Echinus - Sea urchin
C. Antedon - Sea cucumber
D. Cucumaria - Sea lily

A
Both A and D
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B
Both C and D
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C
Both B and D
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D
Both A and B
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Solution

The correct option is B Both C and D
The members of phylum Echinodermata are exclusively marine, found all over the world. Phylum Echinodermata is characterized by features like:
(1) Unsegmented, triploblastic, and coelomate animals
(2) Adults radially symmetrical but larvae are bilaterally symmetrical
(3) Without head and no segmentation.
Examples: Antedon( feather star), Cucumaria( sea cucumber), Adamsia( sea anemone), Echinus( sea urchin).
Thus option B is the correct answer.

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