Organisms under the taxonomic group Animalia are

Question

A.
all single-celled autotrophs.

B.
sometimes multi-celled autotrophs.

C.
sometimes single-celled heterotrophs.

D.
all multi-celled heterotrophs.

Answer 1

The correct answer is:

D. all multi-celled heterotrophs.

Organisms in the taxonomic group Animalia are primarily multicellular and heterotrophic, meaning they obtain their food by consuming other organisms. While there are some exceptions in the broader biological context, such as certain single-celled organisms that are classified as animals (like some protozoa), the defining characteristic of Animalia is that they are predominantly multicellular and heterotrophic.