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Question

Planaria possess a high capacity of

A
metamorphosis
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B
regeneration
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C
alternation of generation
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D
bioluminescence
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Solution

The correct option is B regeneration
Regeneration is a mode of asexual reproduction where a whole new organism arises from a part of the parent body. Example: Planaria. If a Planaria is cut into 2 or more pieces, each piece will give rise to a new Planaria.

Regeneration is also a process of growth where an organism restores a lost part of its body. When the tail of a lizard is cut off, it regrows.

Metamorphosis is a process where, after birth, an organism undergoes multiple stages of marked changes in the structure to become an adult. Example: Tadpole of a frog into an adult frog.

Alternation of generation is the phenomena where an organism alternates between asexual and sexual phases during its life cycle. Example: Jellyfish alternates between a sexual phase called medusa and an asexual phase called a polyp.

Bioluminescence is a characteristic feature of Ctenophores, where they emit light.

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