1. There are 3 types of heterotrophic nitrition :
a. Holozoic nitrition :
*involves feeding by ingesting complex organic matter which are then digested and absorded.
*Examples of organisms with holozoic nutrition are animals and insectivorous plants.
b. Saprophytism :
*involveed feeding by absorbing their required nutrients from dead organic matter.
*most saprophytes are bacteria and fungi like mushrooms, yeasts and Mucor sp. (bread mould)
c. Parasitism :
* involving feeding by absorbing their nutrients from living organism.
*Examples : fleas, lice and tapeworm.
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