The three main types of heterotrophic nutrition are:

Heterotrophic nutrition is nutrition obtained by digesting organic compounds.

Their mode of nutrition is known as heterotrophic nutrition because they eat other living organisms as food in order to survive.

Parasitic Nutrition is a mode of heterotrophic nutrition where an organism (known as a parasite) lives on the body surface or inside the body of another type of organism (known as a host).