________ is maintenance of constant and favourable internal environmental condtitions suitable for the functioning of body organs.
Homeostasis is the maintenance of constant and favourable internal environmental conditions suitable for the functioning of body organs. For example, maintenance of the body temperature in human beings (thermoregulation) or maintenance of water level and ion concentration in the cells (osmoregulation).
Metabolism is the sum total of all the reactions that are happening in a living organism. It includes catabolism and anabolism. Catabolism or destructive metabolism is the process of the breakdown of molecules for releasing energy. For example, respiration. Anabolism or constructive metabolism is the process of synthesis of complex substances. For example, photosynthesis.
Differentiation of a body into smaller units and subunits which are arranged in an orderly manner is known as organisation. During the cellular organisation, organelles interact with each other for the proper functioning of the cell. Due to the presence of the organisation, a living being is called an organism.