Question

Which of the following life processes is involved when an athlete sweats after a race?

• A. Excretion
• B. Nutrition
• C. Growth
• D. Respiration

Answer 1

The correct option is A

Excretion

During the process of sweating, the body releases some fluids to get rid of the heat in the body. In this process, unwanted substances such as small amounts of urea, salts, etc. are also eliminated. The process in which unwanted substances are eliminated from the body is known as excretion.Therefore, sweating is a mode of excretion. Nutrition is the extraction of energy from the food that we eat which is used for various life processes like growth, maintenance, reproduction, etc. Respiration is the process by which organisms exchange gases with the surroundings and generate energy in the form of ATP which is the cellular currency of energy.