Question

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

Answer 1

Answer: (B)

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.