how can you say that amoeba follows the five steps of nutrition?
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Amoeba follows the five steps of nutrition:
1. Ingestion: Amoeba senses the food and surround it with the help of pseudopodia. Food vacuole comprising of food and water is formed. This is known as ingestion.
2. Enzymes present in cytoplasm move to food vacuole and act on it to carry out the process of digestion.
3. Soluble particles are absorbed and assimilated after digestion.
4. Undigested food move out of the body. This is known as egestion.
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2.Digestion:the digestive juices act on the food
3.&4.Absorption and Assimilation:The nutrients are absorbed and carried to the cells for energy and performing other metabolic functions.
5.Egestion:The undigested food is egested.
Nutrition in amoeba is holozoic. Thus, solid food particles are ingested which are then acted upon by enzymes and digested. It is an omnivore, feeding on both plants and animals. Its diet includes bacteria, microscopic plants like the diatoms, minute algae, microscopic animals like other protozoa, nematodes and even dead organic matter.
Since it is a unicellular organism, amoeba does not have any specialised structure or organ for the process of nutrition. It takes place through the general body surface with the help of pseudopodia.
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