NEET BIOLOGY

Detailed explanation-1: -Protist feeding habits According to Simpson, protists can be photosynthetic or heterotrophs (organisms that seek outside sources of food in the form of organic material).

Detailed explanation-2: -zooflagellates-They belong to the kingdom protista but they neither have chloroplasts nor they prepare their own food. It is a non-photosynthetic protist.

Detailed explanation-3: -Chrysophytes, Dinoflagellates and Euglenoids These form another category under kingdom Protista. These are generally single-celled or multicellular organisms. These are photosynthetic, found mostly in freshwater sources or marine lakes.

Detailed explanation-4: -Protists themselves and their products of photosynthesis are essential-directly or indirectly-to the survival of organisms ranging from bacteria to mammals. As primary producers, protists feed a large proportion of the world’s aquatic species.