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Saturday, October 1, 2011

Planaria

They live in fresh water or brackish water .some species are terrestrial.The body size varies from 9mm to 12mm.
It is a free living flatworm.The body is bilaterally symmetrical.If this animal is cut lengthwise or breadthwise or along its axis,each part develops ins lost part  and new animals are formed.This is called re-generation.
Planaria is a hermaphrodite because both male and female reproductive systems are present in the same animal.

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