Amoeba sticks to substratum by means of

Rough surface

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Plasmalemma

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Protein

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None of the above

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Solution

The correct option is A Plasmalemma
Amoeba belongs to the Kingdom: Protista, Phylum: Protozoa, Genus: Amoeboid protozoans.
These are unicellular organisms with the heterotrophic mode of nutrition. The structure of Amoeba is not fixed because of the Pseudppodia which is also known as "False Feet", which helps in locomotion as well as ingestion of food. Its body has three main parts- Plasmalemma, Nucleus, Cytoplasm. Plasmalemma is a lipid bilayer with no cell wall. Extremely small microvilli are present on its surface. These microvilli contribute to the adhesive capacity of Amoeba. Thus, helps in the attachment of Amoeba to the substratum. Thus, Option B is the correct option.

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(a) Describe the process of nutrition in Amoeba. Draw labelled diagrams to show the various steps in the nutrition in Amoeba.
(b) What is the mode of nutrition in Amoeba known as ?
(c) What is the process of obtaining food by Amoeba called ? What does it mean ?

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