Param Publication
Grow Career Publication
Excretion in animals
Excretion, the process by which animals rid themselves of waste products and of the nitrogenous by-products of metabolism. Through excretion organisms control osmotic pressure—the balance between inorganic ions and water—and maintain acid-base balance. The process thus promotes homeostasis, the constancy of the organism’s internal environment. Every organism, from the smallest protist to the largest mammal, must rid itself of the potentially harmful by-products of its own vital activities.
