Reproduction in animals ...

Solution:
 

Whien observed under a microscope, the hydra changes its size and shape as it is under asexual reproduction. It has tentacles and has a small outgrowth on one side of its body called bud. It reproduces by budding

Budding involves the formation of a new individual from a protrusion called the bud .In Hydra, the cells divide rapidly at a specific site and develop as an outgrowth called a   bud . These buds, while attached to the parent plant, develop into small individuals. When this individual becomes large enough, it detaches itself from the parent body to exist as an independent individual with its own mouth and tentacles.

This bud gradually grows into a full hydra, developing its mouth and tentacles.

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