Question

1. “The amount of irrigation differs for different crops.” Justify the statement by giving examples.
2.How are crops classified on the basis of the season? Write any 5 differences between them.
3. Find below the two statements labelled ‘A’ and ‘R’. Select the correct answers for these statements from the given codes (i), (ii), (iii) and (iv):
Assertion (A): Paddy is grown in the months of November to April.
Reason (R): Paddy requires standing water for its growth. It depends upon western monsoon
(i) Both A and R are true and R is the correct explanation of A.
(ii) Both A and R are true and R is not the correct explanation of A
(iii)A is true but R is false.
(iv) A is false but R is true.
4. Why does agricultural land need to be ploughed?
5. List the advantages of transplantation.
6. Overuse of fertilizers is not good for the growing crops. Do you agree with the statement? Why?
7. Differentiate between waterlogging and water lodging. (2 points)
8. Why is a traditional system of irrigation, though cheap, suggested for replacing the modern system of irrigation?
9. Differentiate between weedicides and pesticides. (2 points)
10. Excessive use of pesticides is not advisable. Why?
11. Why is it necessary to remove the weeds?
12. Name the organisations/agencies that are responsible for the large-scale storage of food grains.
13. Give any four reasons for introducing Mexican wheat varieties in India.
14. What is meant by emasculation?
15. Is it advisable to grow a crop of soybean in between two major cereal crops? Give reason.

Answer 1

there is need of water for plants

Explanation:

becauuse they make food from it

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