NEET BIOLOGY

Detailed explanation-1: -Heterotrophs cannot make their own food, so they must eat or absorb it. For this reason, heterotrophs are also known as consumers. Consumers include all animals and fungi and many protists and bacteria. They may consume autotrophs or other heterotrophs or organic molecules from other organisms.

Detailed explanation-2: -Protists are eukaryotic, unicellular organisms that belong to the kingdom Protista. All protists are not heterotrophs. They can be autotroph, heterotroph, or mixotroph. Autotrophic protists possess chlorophyll that helps them in photosynthesis.

Detailed explanation-3: -Organisms that cannot generate their own food are classified as heterotrophs. Generally, heterotrophs derive nutrition from consuming other organic, carbon-containing sources. Protists are omnipresent, eukaryotic organisms, as they have a cellular nucleus.

Detailed explanation-4: -Animal-like protists are called protozoa (proto=first; zoia=animal) because they were considered primitive animals. They are heterotrophs because they cannot make their own food.

Detailed explanation-5: -A major difference between autotrophs and heterotrophs is that the former are able to make their own food by photosynthesis whereas the latter cannot.