12th Class Biology Origin of Life Death

Death

Category : 12th Class

Death is the permanent breakdown and finally stopping of vital functions of body, especially heart beat and respiration.

Characteristics

(1) It is the last event in the degenerative processes of ageing.

(2) Death involves widespread be cell breakdown and cell death.

(3) Death of an organism involves the death of body cells. But all the body cells do not die at same rate e.g. ciliated cells lining the respiratory tract of mammals continue to beat their cilia for long time even after clinical death.

(4) There is no natural death in some protists e.g. Amoeba and monerans like bacteria, etc.

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