Heterotrophic vs. Holozoic — What's the Difference?

An organism that is dependent on complex organic substances for nutrition because it cannot synthesize its own food.

Obtaining nourishment by the ingestion of organic material. Used chiefly of protozoans.

Being a heterotroph.

Obtaining nutrition, as most animals, by the ingestion of organic matter.

Requiring organic compounds of carbon and nitrogen for nourishment;

Obtaining nourishment as animals do by ingesting complex organic matter