Question

Explain in detail about feeding and digestion of amoeba.

Answer 1

Amoeba: Amoeba is a microscopic single-celled organism found in water bodies mostly static.

1. Amoeba has a cell membrane, a rounded, dense nucleus, and many small bubble-like vacuoles in its cytoplasm.
2. Amoeba can constantly change their shape and position. It pushes out one, or more finger-like projections, called pseudopodia or false feet for movement and those help them capture food.
3. Amoeba feeds on some microscopic organisms. When it senses food, it pushes out pseudopodia around the food particle forms a spherical boundary around it, and engulfs it.
4. The food gets trapped in a food vacuole. Digestive juices are secreted into the food vacuole. They act on the food and break it down into simpler substances.
5. Gradually the digested food is absorbed. The absorbed substances are used for growth, maintenance, and multiplication.
6. The undigested residue of the food is expelled outside by the vacuole.