Q18 of 23 Page 8

Explain the term "Regeneration" as used in relation to reproduction of organisms. Describe briefly how regeneration is carried out in multicellular organisms like Hydra.

Regeneration is defined as the process of growing a full organism from its body part.


The examples of organisms which undergoes regeneration are: Hydra and Planaria.


Regeneration in multicellular organisms like hydra is carried in following manner:


1. When the body of the hydra is cut into various pieces, then each piece has tendency to regenerate and form a complete hydra.


2. The regeneration from its body parts occurs through growth and development process.


3. When the body is cut into pieces, the cells of cut pieces divides and make a ball of cells which then forms tissue and again regenerate the missing body part.

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