Digestion in amoeba — lesson. Science CBSE, Class 7. (2024)

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Digestion in amoeba — lesson. Science CBSE, Class 7.? ›

Food vacuole and digestion

Amoeba is a unicellular protozoa whose digestion takes place in the food vacuole. The food ingested is engulfed by pseudopodia through the process of phagocytosis. The food vacuoles then fuse with lysosomes to form phagolysosomes that contain the enzymes essential for breaking down food particles.

Ingestion is the process of taking in the food into the body either by swallowing or absorbing it. Amoeba pushes out the pseudopodia to encircle the food and engulfs it forming a food vacuole. This process is known as phagocytosis.

Amoeba does not have any specialized organ for nutrition. The entire process is carried through the body surface with the help of pseudopodia. Nutrition in an Amoeba occurs through a process called phagocytosis. Phagocytosis is the process by which the food is engulfed by the organism.

Amoeba is a protozoan that lives in freshwater. The mode of nutrition in amoeba is holozoic nutrition. It eats small aquatic plants and animals.

Amoebae use pseudopodia, which are arm-like projections on the cell surface, to take in food. It produces a vacuole by fusing over the meal particles. Complex compounds are broken down into simpler molecules inside the vacuole, which eventually diffuse into the cytoplasm.

Amoeba engulfs its food by the process of phagocytosis, by trapping the food in a food vacuole formed with the help of finger-like projections called pseudopodia.

Phagocytosis occurs in Amoeba. It is the process by which the food particle is engulfed as a whole. A food vacuole is formed around the ingested food molecule and is then pushed deeper into the cell via cytoplasmic movements.

Pseudopodia are the projections of varying length protruding out of the body of Amoeba. These structures help in capturing the food as well in movement.

Thus, all life processes such as respiration, digestion, excretion, and all life processes in amoeba can be done through diffusion. Note: Amoeba, being a unicellular organism, obtains oxygen and expels waste gas (carbon dioxide) by diffusion. Thus, in amoeba diffusion is used as the method of respiration.

What is the function of food vacuole in amoeba Class 7? ›

In an amoeba, the function of a food vacuole is to collect food from outside the organism and digest it within the body.

Phagocytosis. Phagocytosis is the process in which Amoeba uses its false feet or pseudopodia to capture its food. The Amoeba moves towards its food through extensions called pseudopodia. The pseudopodia extends all around the food particles and completely engulfs the food.

Amoeba ingests food through a process known as phagocytosis. During this process, the pseudopodia formed by the amoeba surrounds and engulfs any food particle.

Nutrition in Amoeba 5 points are the five steps of nutrition that include ingestion, digestion, absorption, assimilation, and egestion.

freshly cooked food. Don't eat raw vegetables or unpeeled fruit. Drink only bottled water and liquids.

The process of consuming food by amoeba is called phagocytosis. Amoeba use pseudopodia to perform phagocytosis. This term means “cell eating”.

The food vacuole is where amoeba digests their food. An amoeba is a type of organism that can change shape by extending and retracting its pseudopods. The food is ingested by the amoeba through phagocytosis, which engulfs the food particles.

Amoeba engulf its food by surrounding the food particle with its pseudopodia. The undigested food which is largely carbon dioxide gas is expelled outside by the vacuole. While in human beings the food which is complex substance is taken inside the mouth and undergoes a complex process of digestion and absorption.

Amoeba has no fixed place for egestion. The undigested food gets collected inside amoeba, then its cell membrane suddenly ruptures and the undigested food is thrown out of the body of amoeba.