. Assertion: Process of maintaining a constant internal environment is known as homeostasis

Reason: kidneys are excretory and homeostatic organs.

Best Answer

Answer ||| (b)

Solution ||| Walter Cannon (1932) was introduced the term homeostasis (homeios = same;stasis = standing). Homeostasis maintains the stability of the cell environment and this way provides the organisms with a degree of independence of the environment; in order to achieve stability. Mammals have two kidneys which perfor excretory function and maintain urea level in blood.


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