Obelia does not exhibit

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metagenesis

metamerism

metamorphosis

metabolism

answer is B.

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Detailed Solution

Obelia is a cnidarian. It exhibits metagenesis (alternation of polyp and medusa stages in the life history). It undergoes indirect development which includes the metamorphosis of planula larva into adult. Metabolism is a defining feature of all living organisms.

Metamerism is met with in annelids, arthropods and chordates. Cnidarians (e.g., Obelia) are unsegmented.

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