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Nutrition in Animals
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Nutrition in Animals Notes
› Nutrition in amoeba
Nutrition in amoeba
NUTRITION IN AMOEBA
Amoeba was first discovered by
August Johann
Rösel von Rosenhof in 1757.
Amoeba is a
shapeless unicellular
(made up of only one cell) organism.
Amoeba obtains its nutrition in a heterotrophic mode.
Amoeba eats tiny (microscopic) plants and animals as food which floats in water in which it lives.
Amoeba feeds on
plankton
(microscopic organisms that drift on the oceans' currents) and diatoms present in water.
It can form arm- like structures called
pseudopodia
(
pseudo:
false;
podia:
feet), extending from any part of its body as it is shapeless.
When it senses food in its surroundings it extends its pseudopodia in that direction and moves towards it.
Then it engulfs the food with its pseudopodia.
When the food enters its body the amoeba forms a
food
vacuole
around it which contains certain enzymes to digest the food.
When the food is digested the unwanted waste is released through its body surface.