NEET BIOLOGY

Detailed explanation-1: -Animal-like protists are commonly called protozoa (singular, protozoan). Most protozoa consist of a single cell. They are animal-like because they are heterotrophs, and are capable of moving. Although protozoa are not animals, they are thought to be the ancestors of animals.

Detailed explanation-2: -Animal-like protists are also known as Protozoa. Some are also parasites. The Protozoa is often divided into 4 phyla : Amoebalike protists, flagellates, ciliates, and spore-forming protists.

Detailed explanation-3: -Animals like protists are often called protozoans. They include amoeba and paramecium.

Detailed explanation-4: -Protozoa are one-celled animals found worldwide in most habitats. Most species are free living, but all higher animals are infected with one or more species of protozoa. Infections range from asymptomatic to life threatening, depending on the species and strain of the parasite and the resistance of the host.

Detailed explanation-5: -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.