NEET BIOLOGY

Detailed explanation-1: -Heterotrophic nutrition can be one of three types – holozoic, saprophytic or parasitic. Holozoic nutrition can be seen in most vertebrates and some unicellular organisms like the amoeba. Saprophytic nutrition is where the organisms feed on dead and decaying matter.

Detailed explanation-2: -Types of Heterotrophic Nutrition The food consumed may be either another organism or a plant. There are three different types of holozoic organisms and are classified on the basis of the food they consume. They are-carnivores, herbivores and omnivores.

Detailed explanation-3: -The nutrition of all protozoa is holozoic; that is, they require organic materials, which may be particulate or in solution. Amebas engulf particulate food or droplets through a sort of temporary mouth, perform digestion and absorption in a food vacuole, and eject the waste substances.

Detailed explanation-4: -Most protozoa are heterotrophic and survive by consuming bacteria, yeast, fungi, and algae. There is evidence that they may also be involved, to some extent, in the decomposition of soil organic matter.