NEET BIOLOGY

Detailed explanation-1: -The opisthokonts include the animal-like choanoflagellates, which are believed to resemble the common ancestor of sponges and, in fact, all animals. Choanoflagellates include unicellular and colonial forms, and number about 244 described species.

Detailed explanation-2: -The Opisthokonta is a large supergroup of eukaryotes including metazoans and fungi. In addition, the Opisthokonta also includes some flagellate (choanoflagellates), amoeboid (e.g. Nuclearia) and sporozoan (e.g. Ichthyosporea, Microsporidia) protists.

Detailed explanation-3: -Recent molecular studies suggest that Opisthokonta, the eukaryotic supergroup including animals and fungi, should be expanded to include a diverse collection of primitively single-celled eukaryotes previously classified as Protozoa.

Detailed explanation-4: -Opisthokonts are the groups of eukaryotes that include amoebae, fungi, and animals. Humans, of course, are among the animals.