CBSE Class 8 Science Crop Production And Management Assignment Set A

CBSE Class 8 Science - Crop Production And Management (1)

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CROP PRODUCTION AND MANAGEMENT

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1.Why storage of food is done?

2.Write any two sources of irrigation?

3.What are the two common forms by which we add nutrients in soil?

4.What do you mean by seed drill?

5.What is sowing?

6.Why we use tractor driven cultivator for ploughing now a days?

7.Name the vitamin found in cod liver oil:

(A) Vitamin A (B) Vitamin B (C) Vitamin C (D) Vitamin D

8.How are disease transmitted in plants?

9.Name two common examples of agricultural crops.

10.What is agriculture?

11.What is crop?

12.The plants of same kind grown at a place is referred to as

(A) garden (B) agriculture (C) crop (D) all of the above

13.Fertilisers are used to improve crop yield because they

(A) are rich in inorganic nutrients (B) are rich in organic nutrients.

(C) are rich in organic and inorganic nutrients. (D) all of the above

14.Continuous growing of crops make the soil poorer and less-fertile, we can replenish soil by

following method

(A) using manure (B) using fertilizers (C) by crop-rotation (D) all of the above

15.Removal of weeds is necessary for plant growth because

(A) weeds compete with crop for nutrition (B) weeds interfere in harvesting

(C) weeds may be poisonous (D) all of the above

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