Ans: Osmoregulation is defined as maintenance of the amounts of water and salts in body fluids (i.e. blood and tissue fluids) to normal levels. We know that the relative amounts of water and salts in body fluids and inside cells control the processes of diffusion and osmosis, which are essential for the functioning of cells.
Thermoregulation: The maintenance of internal body temperature is called thermoregulation. The enzymes of body work best at particular temperatures (optimum temperature). Any change in body temperature may affect the functioning of enzymes.