Ncert – class 8- science – Chapter 1: Crop Production and Management 1 Welcome to your Ncert - class 8- science - Chapter 1: Crop Production and Management 1 1. How will you compare manures and fertilizers, with respect to their ease of storage and transportation? It is easy to store and transport fertilizer but difficult to store and transport manure. It is easy to store and transport manure but difficult to store and transport fertilizer. Both are easy to store and transport. Both are difficult to store and transport. None 2. Which of the following tools would a farmer use to remove weeds from the field? Cultivator Hoe Axe Plough None 3. The production of fish on a large scale by farming fish culture in fish nurseries is called Poultry Pisciculture Dairying Apiculture None 4. Propagation of ginger is generally done using leaf stem (rhizome) seed root None 5. Read the statements given below. Seeds require moisture for germination.Plants can absorb nutrients mostly in dissolved form.Irrigation protects crops from both frost and hot air currents.Irrigation improves soil texture.Choose the combination of statements which indicate the need to irrigate crops. (i), (ii), (iii), (iv) (i) and (iii) (i), (ii), (iii) (i) and (ii) None 6. Which of the following is not a traditional method of irrigation? Rahat system Dhekli system Sprinkler system Moat system None 7. Identify the correct statement: Cultivator and hoe are pulled by animals whereas plough is tractor driven Hoe and plough are pulled by animals whereas cultivator is tractor driven Hoe and plough are tractor driven whereas cultivator is pulled by animals Cultivator and plough are pulled by animals whereas hoe is tractor driven None 8. The term used for the process of separation of grains from chaff is hand picking threshing sieving winnowing None 9. The monsoon season in our country is during the month. April to December. November to March. June to September. January to May. None 10. Given below are statements about the harmful effects of weeds on crop plants. They interfere in harvesting.They help crop plants to grow healthily.They compete with crop plants for water, nutrients, space and light.They affect plant growth.Choose the correct combination of statements. (iii) only (i), (iii), (iv) (iii), (iv) (i), (ii), (iii), (iv) None 11. Which oil is obtained from fish? Tallow oil Cod-liver oil Olive oil Corn oil None 12. The system of irrigation wherein water is supplied drop by drop near the roots of plants, is called 13. What is the advantage of turning and loosening of soil before sowing? The colour of the soil particles can be maintained by this process. This brings the nutrient-rich soil to the top so that plants can use the nutrients present in the lower layer. The nutrients present in the soil can get evaporated by this process. The nutrients of the top layers can get a chance to go below to facilitate the growth of burrowing animals. None 14. The method of irrigation in which water is transported through narrow pipes to one or more central locations: Furrow irrigation Sprinkler irrigation Drip irrigation Centre Pivot irrigation None 15. Which of the following statements is not true for organic manure? It has a balance of all plant nutrients. It provides humus to soil. It improves texture of soil. It enhances water holding capacity of soil. None 16. Which is the first agricultural practice followed by farmers while cultivating crops? Protection from weeds Preparation of soil Irrigation Sowing None 17. The process of loosening and turning of soil is called digging and winnowing. tilling and ploughing. harvesting and storage. irrigation and manuring None 18. Which statement is true regarding harvest? The harvest marks the time that seeds have to be sown in a field. The harvest marks the end of the growing cycle for a particular crop. The harvest is the celebration for beginning of agricultural activities of a new season. The harvest marks the time that manuring is needed None 19. Which of the following is not true for fertilisers? They increase the yield. They are environment friendly. They are generally used in small quantity. Their excessive use disturbs the balance of nutrients in soil. None 20. What do we call the structures made of concrete or steel that store water used for irrigation? Tanks Canals Tube well Wells None Time's up Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.
