In the following questions, Statement of assertion (A) is followed by a statement of reason (R). 1. If both assertion and reason are true and the reason is the correct explanation of the assertion, then mark. 2. If both assertion and reason are true but the reason is not the correct explanation of the assertion, then mark. 3. If assertion is true statement but reason is false, then mark. 4. If both assertion and reason are false statements then mark.
Assertion: Use of fertilizers greatly enhances crop productivity. Reason: Irrigation is very important in increasing crop productivity.A) 1
B) 2
C) 3
D) 4
Correct Answer: B
Solution :
Among the sixteen essential plant nutrients nitrogen, phosphorus and potash are the most common nutrients found deficient in Indian soil. Supply of these nutrients to soil artificially through fertilizers is necessary to keep the soil rich in plant nutrients for achieving maximum yield. Irrigation practices also helpful in enhancing the crop yield. In this way both fertilizers and irrigation are equally important for high crop yield but the Reason is not correct explanation.
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