CBSE Class 10 Science 2021 Term 1 Solved Paper

Direction for Question No. 31- 35

It consists of two statements - Assertion (A) and Reason (R). Answer these questions selecting the appropriate options given below:

Question : 33

Total: 60

Assertion (A): Nitrogen is an essential element for plant growth and is taken up by plants in the form of inorganic nitrates or nitrites.
Reason (R): The soil is the nearest and richest source of raw materials like Nitrogen, Phosphorus and other minerals for the plants.

Both (A) and (R) are true and (R) is the correct explanation of (A).
Both (A) and (R) are true but (R) is not the correct explanation of (A).
(A) is true, but (R) is false.
(A) is false, but (R) is true.

Solution:

Nitrogen is an essential element for plant growth and is taken up by plants in the form of inorganic nitrates or nitrites. The soil is the nearest and richest source of raw material for plants because it provides essential element such as phosphorous, nitrogen and other minerals required for plant growth.

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