Question

What is holozoic mode of nutrition?

Answer 1

Holozoic nutrition is a kind of nutritional method that involves the ingestion of food either by liquid or solid organic material. The process of holozoic nutrition further comprises digestion, absorption, assimilation of the food, egestion. It takes in the complex substances like carbohydrates and converts them into simpler forms like sugars. For e.g. Humans and amoeba takes nutrition by holozoic mode.
This method of nutrition involves:
1. Ingestion: Taking in complex organic food through mouth opening in higher animals (humans) and through body surface in lower organisms (like amoeba).
2. Digestion: Change of complex food into simple form, done by action of enzymes.
3. Absorption: Absorption of food in soluble form or passing of simple, soluble nutrients through blood or lymph.
4. Assimilation: Utilization of absorbed food for various metabolic processes.
5. Egestion: Expelling out the undigested food.