? Describe the holozoic nutrition with example in an unicellular
organism that you have studied.
Answers
Answer:
Amoeba is a unicellular animal which shows the Holozoic mode of nutrition. Amoeba cell membrane keeps on protruding into pseudopodia. Amoeba surrounds a food particle with pseudopodia and makes a food vacuole.
The food vacuole contains the food particle and water. Digestive enzymes are secreted in the food vacuole and digestion takes place.
After that, digested food is absorbed from the food vacuole. Finally, the food vacuole moves near the cell membrane and undigested food is expelled out.
Holozoic Nutrition: The digestion of food follows after the ingestion of food. Thus, digestion takes place inside the body of the organism.
Holozoic nutrition happens in five steps, viz. ingestion, digestion, absorption, assimilation, and egestion.
Steps of Holozoic Nutrition
There are 5 steps in holozoic nutrition, they are follows
Ingestion – The process of taking in the food is called ingestion.
Digestion – The process of breaking complex food substances into simple molecules is called digestion. Simple molecules; thus obtained; can be absorbed by the body.
Absorption – The process of absorption of digested food is called absorption.
Assimilation – Is a process of utilization of processed food for energy and for growth and repair is called assimilation.
Egestion – The process of removing undigested food from the body is called egestion.
Answer:
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Explanation: