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. Which of the following tools would a farmer use to remove weeds from the field? Cultivator Hoe Axe Plough None 2. Propagation of ginger is generally done using root seed leaf stem (rhizome) None 3. 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 enhances water holding capacity of soil. It improves texture of soil. None 4. What do we call the structures made of concrete or steel that store water used for irrigation? Tube well Wells Tanks Canals None 5. Which oil is obtained from fish? Tallow oil Cod-liver oil Corn oil Olive oil None 6. The process of loosening and turning of soil is called digging and winnowing. irrigation and manuring harvesting and storage. tilling and ploughing. None 7. The production of fish on a large scale by farming fish culture in fish nurseries is called Apiculture Pisciculture Poultry Dairying None 8. Which of the following is not a traditional method of irrigation? Dhekli system Sprinkler system Rahat system Moat system None 9. The term used for the process of separation of grains from chaff is sieving winnowing hand picking threshing None 10. What is the advantage of turning and loosening of soil before sowing? The nutrients present in the soil can get evaporated 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 of the top layers can get a chance to go below to facilitate the growth of burrowing animals. The colour of the soil particles can be maintained by this process. None 11. Which of the following is not true for fertilisers? They are environment friendly. Their excessive use disturbs the balance of nutrients in soil. They are generally used in small quantity. They increase the yield. None 12. The method of irrigation in which water is transported through narrow pipes to one or more central locations: Sprinkler irrigation Drip irrigation Centre Pivot irrigation Furrow irrigation None 13. The monsoon season in our country is during the month. April to December. June to September. November to March. January to May. None 14. Identify the correct statement: Cultivator and hoe are pulled by animals whereas plough is tractor driven Cultivator and plough are pulled by animals whereas hoe is tractor driven Hoe and plough are tractor driven whereas cultivator is pulled by animals Hoe and plough are pulled by animals whereas cultivator is tractor driven None 15. Which statement is true regarding harvest? The harvest is the celebration for beginning of agricultural activities of a new season. The harvest marks the time that seeds have to be sown in a field. The harvest marks the time that manuring is needed The harvest marks the end of the growing cycle for a particular crop. None 16. The system of irrigation wherein water is supplied drop by drop near the roots of plants, is called 17. 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), (ii), (iii), (iv) (i) and (ii) None 18. 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 difficult to store and transport. Both are easy to store and transport. None 19. Which is the first agricultural practice followed by farmers while cultivating crops? Protection from weeds Sowing Preparation of soil Irrigation None 20. 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) (i), (ii), (iii), (iv) (i), (iii), (iv) (iii) only 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.
