Holozoic

Definition

Holozoic is a mode of nutrition where organisms ingest and internally digest solid food particles. It is characteristic of many unicellular eukaryotic parasites.

5 Must Know Facts For Your Next Test

1. Holozoic nutrition involves ingestion, digestion, absorption, assimilation, and egestion.
2. Many protozoa like amoebas and ciliates exhibit holozoic nutrition.
3. The process often involves the formation of food vacuoles where digestion occurs.
4. Enzymes within the food vacuoles break down the ingested material into simpler substances.
5. Holozoic organisms typically feed on bacteria, smaller protists, or organic debris.

Review Questions

Related terms

Phagocytosis:

The process by which a cell engulfs solid particles to form an internal phagosome.

Saprotrophic Nutrition: A mode of nutrition where organisms obtain nutrients by absorbing dissolved organic matter.

Food Vacuole: A membrane-bound vacuole in which ingested food is digested within a cell.