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Nutrition in Living Organisms


  • It is the process of obtaining nutrients from the environment.

  • It is an important source of energy for growth and development of body.


Modes of nutrition

  • Autotrophic nutrition – Organisms synthesize their own food with the help of raw materials. Example – all green plants
  • Autotrophic nutrition is of two types- Phototropic and chemotropic nutrition.
  • Heterotrophic nutrition – Organisms derive energy (nutrition) from the food prepared by plants. Example – All animals, bacteria, and fungi
  • Heterotrophic nutrition is of three types – holozoic nutrition, saprophytic nutrition, and parasitic nutriti…

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