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Solved CBSE Class 8 Science Chapter 1 Assertion and Reason Questions – Crop Production and Management. Here we (Net Explanations) working very hard to providing you with the Important Assertion Reason Questions for this Chapter.
Assertion and Reason Questions Class 8 Science Chapter 1 Crop Production and Management
1.) ASSERTION : The loosening of soil allow the roots to breathe easily.
REASON : The loosened soil helps in the growth of earthworms and microbes present in the soil. These organisms are friends of the farmer since they further turn and loosen the soil and add humus to it.
a) Assertion and reason both are correct statement and reason is correct explanation for assertion.
b) Assertion and reason both are correct statement and reason is not correct explanation for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Ans- Option A
2.) ASSERTION: The soil needs to be turned and loosened.
REASON: Since only a few centimeters of the top layer of soil supports plant growth, turning and loosening of soil brings the nutrient-rich soil to the top so that plants can use these nutrients.
a) Assertion and reason both are correct statement and reason is correct explanation for assertion.
b) Assertion and reason both are correct statement and reason is not correct explanation for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Ans- Option A
3.) ASSERTION : Farmers have to add manure to the fields to replenish the soil with nutrients.
REASON : Continuous cultivation of crops makes the soil rich in nutrients.
a) Assertion and reason both are correct statement and reason is correct explanation for assertion.
b) Assertion and reason both are correct statement and reason is not correct explanation for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Ans- Option c
4.) ASSERTION : In summer, the frequency of watering is lower.
REASON: it be due to the increased rate of evaporation of water from the soil and the leaves
a) Assertion and reason both are correct statement and reason is correct explanation for assertion.
b) Assertion and reason both are correct statement and reason is not correct explanation for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Ans- Option D
5.) ASSERTION : Germination of seeds does not take place under dry conditions.
REASON : Plants contain nearly 90% water.
a) Assertion and reason both are correct statement and reason is correct explanation for assertion.
b) Assertion and reason both are correct statement and reason is not correct explanation for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Ans- Option B
6.) ASSERTION : Before storing the harvested grains are properly dried in the sun to reduce the moisture in them. This prevents the attack by insect pests, bacteria and fungi
REASON :Harvested grains have more moisture. If freshly harvested grains (seeds) are stored without drying, they may get spoilt or attacked by organisms, making them unfit for use or for germination.
a) Assertion and reason both are correct statement and reason is correct explanation for assertion.
b) Assertion and reason both are correct statement and reason is not correct explanation
for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Ans- Option A
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