CBSE Class 10 Science 2023 Outside Delhi Set 1

Question : 19 of 39

Marks: +1, -0

Assertion (A) : Amoeba takes in food using finger like extensions of the cell surface.
Reason (R) : In all unicellular organisms, the food is taken in by the entire cell surface.

Both Assertion (A) and Reason (R) are true and Reason $(R)$ is the correct explanation of $( {\A})$ .
Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of (A).
Assertion (A) is true, but Reason (R) is false.
Assertion (A) is false, but Reason (R) is true.

Solution:

An amoeba captures food using finger-like projections of its cytoplasm called pseudopodia. The food particle is then ingested by surrounding it in cell membrane and internalizing into the cell in a process called phagocytosis. In unicellular organisms, the food is taken by the entire surface.

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