Read the following statements and choose the correct option.
A) In Obelia, polyps produce medusae asexually and medusae form the polyps sexually.
B) Polyp is a sessile and cylindrical form whereas medusa is umbrella shaped and a free swimming form.

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Both A and B are correct

Both A and B are incorrect

Only A is correct

Only B is correct

answer is A.

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Detailed Solution

Cnidarians like Obelia exhibit two basic body forms called polyp and medusa. The polyp is a sessile and cylindrical form whereas, the medusa is umbrella-shaped and free-swimming. Those cnidarians which exist in both forms exhibit alternation of generation (Metagenesis), i.e., polyps produce medusae asexually and medusae form the polyps sexually.

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