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