Maintenance of a stable internal environment is called as:
Correct answer: C. Homeostasis
- A. Hormones
- B. Osmosis
- C. Homeostasis
- D. Ecology
Explanation
This is a standard answer. The maintenance of a stable/constant internal environment is called homeostasis. A hormone is a chemical substance, produced by a gland and carried in the bloodstream, which alters the activity of specific target organs. Osmosis is the movement of water molecules (solvent) from a region of higher water potential to a region of lower water potential. Ecology is the study of the relationships between living organisms, including humans, and their physical environment. The correct answer is, therefore, C.
This question appeared on the HEC Phase II 2017 paper, which you can sit online with every answer explained.
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About Thermoregulation
Thermoregulation maintains body temperature through negative feedback controlled mainly by the hypothalamus. It covers vasodilation and vasoconstriction, sweating, shivering, changes in metabolic heat production and behavioural responses, while distinguishing heat loss by radiation, conduction, convection and evaporation from temperature regulation itself.
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