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