Crop Production & Management Model Paper Of CBSE Science Class 8th

M.M: 48 marks                                                                                Dated: 01/07/2011




                 

                                                                 

Time: 1 ½ hour

Q 1: Fill in the blanks                                          (1 mark per question x 18 = 18 marks)

1. The activities or tasks undertaken by farmers for cultivation of crops are known as __________ ______________.
2. Separation of grains from the chaff is called _____________.
3. ____________ involves removal of unwanted and uncultivated plants called _________.
4. We get _______ ______ oil from fish which is rich in vitamin_______.
5. Large scale storage of grains is done in __________ and ____________ to protect them from pests.
6. Farmers with small holdings of land do the separation of grain and chaff by _____________.
7. Special festivals associated with the harvest season are ____________ and ____________.
8. One example of a weedicide is _______________.
9. Weedicides are sprayed during the vegetative growth of weeds before ______________ and _______ formation.
10. Two traditional methods of irrigation are _____________ and __________.
11. Plants contain nearly ________ water.
12. __________ ____________ are present in the nodules of the roots of leguminous plants.
13. Two examples of fertilisers are ___________ and _____________.
14. With reference to fertilisers, NPK stands for ___________, ___________ and ____________.
15. ______________ is the most important part of crop production.
16. Nowadays, ploughing is done by tractor driven _______________.
17. The process of loosening and turning of the soil is called __________ or ___________.
18. The levelling of soil is done with the help of a ____________.

Q 2: Define crop. What are the two broad cropping patterns in India? Give two examples of each.                                                                                                                (3 marks)

Q 3: How many activities are necessary for cultivation of crops? Write their names. 
(4 marks)

Q 4: Why soil is turned and loosened?                                                                 (2 marks)

Q 5: Define animal husbandry.                                                                            (1 mark)

Q 6: Write the names of two places where large scale storage of grains is done. What is the main difference between them?                                                                          (2 marks)

Q 7: What are weeds? How are crops protected from weeds? Write two ways to do so.       (3 marks)

Q 8: What do you understand by harvesting? How is it done? Name two tools used for harvesting in India?                                                                                          (3 marks)

Q 9: What is a combine?                                                                                   (1 mark)

Q 10: Why is it important to properly dry the fresh grains before storing them? What is used by farmers to store food grains at home?                                                            (2 marks)

Q 11: Write names of two modern methods of irrigation. Write one major difference between them.                                                                                                  (3 marks)

Q 12: Write two differences between fertiliser and manure.                                  (2 marks)

Q 13: What is crop rotation and why is it done?                                                   (2 marks)

Q 14: What will happen if mustard is grown in rainy season? Explain.                    (2 marks)