Direction for: In each of the following questions a statement of Assertion is given followed by a corresponding statement of Reason just below it. Of the statements mark the correct answer as
Assertion Process of maintaining a constant internal environment is known as homeostasis. Reason Kidneys are excretory and homeostatic organs.A) extinction of these species from other regions
B) continental separation
C) absence of terrestrial route to these places
D) retrogressive evolution
Correct 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 organism with a degree of independence of the environment; in order to achieve stability. Mammals have two kidneys which perform excretory function and maintain urea level in blood.
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