Amoeba (Feeding and digestion in amoeba)
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| Amoeba |
Amoeba is a microscopic single-celled organism found in pond water. Amoeba has a cell membrane, a rounded, dense nucleus, and many small bubble-like vacuoles in their cytoplasm. Amoeba constantly changes their shape and position. It pushes out one, or more finger-like projections, called pseudopodia or false feet for movement and capture of food.
Amoeba feeds on some microscopic organisms. When it senses food, it pushes out pseudopodia around the food particle and engulfs it. The food becomes 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. Gradually the digested food is absorbed. The absorbed substances are used for growth, maintenance, and multiplication. The undigested residue of the food is expelled outside by the vacuole.
References
- NCERT Science Class VII
Tags:
Class X