NEET BIOLOGY

Detailed explanation-1: -Protozoa are a loose grouping of organisms with usually unicellular organization and heterotrophic mode of nutrition. The systematic position of the Protozoa and related organisms remained and still remains unclear for many lineages.

Detailed explanation-2: -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-3: -Introduction. Protozoa are unicellular, heterotrophic, eukaryotic organisms comprising four organization types: amebae, flagellates, ciliates, and parasitic sporozoans.

Detailed explanation-4: -Features of protozoans The protozoans are unified by their heterotrophic mode of nutrition, meaning that these organisms acquire carbon in reduced form from their surrounding environment.

Detailed explanation-5: -Heterotrophic nutrition is the mode of nutrition where the organism is unable to prepare its food and hence, depends upon plants or other organisms for nutrition.