(a) What is meant by regeneration? Name two animals which can regenerate fully from their cut body parts. (b) Explain why, more complex multicellular organisms cannot give rise to new organisms through regeneration.

(a) The process in which an organism can produce new organisms from its damaged body parts is called regeneration. Organisms that can regenerate fully from their lost body parts star fish and salamanders.

(b) Complex multicellular organisms cannot give rise to new organism because the tissue and specialised cell make up the organs in the body. Due to this high degree of specialisation, multicellular organisms cannot reproduce by regeneration of a part of some tissue.