Class 10 Biology
Various functions carried out by living beings; which are necessary to maintain and continue life are called life process. Following are the life processes in living beings:
- Transportation of substances
The process by which an organism takes food and utilizes it is called nutrition.
Need of nutrition: Organisms need energy to perform various activities. The energy is supplied by the nutrients. Organisms need various raw materials for growth and repair. These raw materials are provided by nutrients.
Nutrients: Materials which provide nutrition to organisms are called nutrients. Carbohydrates, proteins and fats are the main nutrients and are called macronutrients. Minerals and vitamins are required in small amounts and hence are called micronutrients.