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. 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) and (iii) (i), (ii), (iii) (i) and (ii) (i), (ii), (iii), (iv) None 2. What do we call the structures made of concrete or steel that store water used for irrigation? Wells Tanks Tube well Canals None 3. 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 4. Which of the following is not a traditional method of irrigation? Dhekli system Rahat system Sprinkler system Moat system None 5. The production of fish on a large scale by farming fish culture in fish nurseries is called Apiculture Poultry Pisciculture Dairying None 6. 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 marks the time that manuring is needed The harvest is the celebration for beginning of agricultural activities of a new season. None 7. Which of the following statements is not true for organic manure? It enhances water holding capacity of soil. It improves texture of soil. It has a balance of all plant nutrients. It provides humus to soil. None 8. The process of loosening and turning of soil is called digging and winnowing. irrigation and manuring tilling and ploughing. harvesting and storage. None 9. Propagation of ginger is generally done using leaf stem (rhizome) root seed None 10. Which is the first agricultural practice followed by farmers while cultivating crops? Protection from weeds Preparation of soil Irrigation Sowing None 11. 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), (iv) (iii) only (i), (iii), (iv) (i), (ii), (iii), (iv) None 12. How will you compare manures and fertilizers, with respect to their ease of storage and transportation? Both are difficult to store and transport. It is easy to store and transport manure but difficult to store and transport fertilizer. It is easy to store and transport fertilizer but difficult to store and transport manure. Both are easy to store and transport. None 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. The nutrients of the top layers can get a chance to go below to facilitate the growth of burrowing animals. 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. None 14. The system of irrigation wherein water is supplied drop by drop near the roots of plants, is called 15. The monsoon season in our country is during the month. June to September. January to May. April to December. November to March. None 16. The term used for the process of separation of grains from chaff is threshing hand picking sieving winnowing None 17. Which of the following tools would a farmer use to remove weeds from the field? Hoe Plough Cultivator Axe None 18. The method of irrigation in which water is transported through narrow pipes to one or more central locations: Sprinkler irrigation Furrow irrigation Centre Pivot irrigation Drip irrigation None 19. Which oil is obtained from fish? Corn oil Tallow oil Cod-liver oil Olive oil None 20. Which of the following is not true for fertilisers? They increase the yield. They are generally used in small quantity. They are environment friendly. Their excessive use disturbs the balance of nutrients in soil. 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.
