Q.

Following sequence of events occur in the life cycle of which of the following organisms?Polyp →Medusa →PlanulaA. ObeliaB. PhysaliaC. Sea anemone

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a

A only

b

A & B only

c

C only

d

A, B & C

answer is B.

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Detailed Solution

Both, Obelia and Physalia show metagenesis. They show polyp stage, medusa stage. The larval stage of Obelia and Physalia are called as planula.Sea anemone does not exhibit polymorphism.
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