Nutrition In Animals Class 7 Science - Feeding and Digestion In Amoeba

Nutrition In Animals Class 7 Science - Feeding and Digestion In Amoeba
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Amoeba is a microorganism which have only single cell body. It is found in pond water. It does not have a fixed shape like other organisms.
Ingestion: Method of taking food inside the body is called ingestion. The finger-like structures are called pseudopodia. These are the false feet of amoeba. Amoeba encircles the pseudopodia around food particle and takes it inside its body.
Digestion: The cell contain jelly-like liquid called cytoplasm. From cytoplasm digestive enzymes are secreted in the food vacuole.
Absorption: The simpler substances get diffused into the cytoplasm. It is called absorption.
Assimilation: The food entering in cytoplasm is used for energy, growth, maintenance and multiplication. It is called assimilation.
Egestion: The undigested waste is taken near the cell membrane and then thrown outside the cell body by rupturing i.e. cutting the membrane. It is called egestion.