{"id":12872,"date":"2020-10-09T16:07:15","date_gmt":"2020-10-09T10:37:15","guid":{"rendered":"https:\/\/ncertsolutions.guru\/?p=12872"},"modified":"2020-10-12T11:51:54","modified_gmt":"2020-10-12T06:21:54","slug":"crop-production-and-management-class-8-extra-questions","status":"publish","type":"post","link":"https:\/\/ncertsolutions.guru\/crop-production-and-management-class-8-extra-questions\/","title":{"rendered":"Crop Production and Management Class 8 Extra Questions and Answers Science Chapter 1"},"content":{"rendered":"<p>Crop Production and Management Class 8 Extra Questions and Answers Science Chapter 1 PDF are solved by experts and will guide students in the right direction. Students can get how to tackle different questions easily by solving the <a href=\"https:\/\/ncertsolutions.guru\/extra-questions-for-class-8-science\/\">Extra Questions for Class 8 Science<\/a> Question bank on a regular basis.<\/p>\n<h2>Class 8 Science Chapter 1 Extra Questions and Answers Crop Production and Management<\/h2>\n<p><strong>Extra Questions for Class 8 Science Chapter 1 Crop Production and Management with Answers<\/strong><\/p>\n<h3>Crop Production and Management Class 8 Extra Questions Very Short Answer Type<\/h3>\n<p>Question 1.<br \/>\nName two methods for control weed.<br \/>\nAnswer:<\/p>\n<ul>\n<li>Weeds are removed by hand uprooting.<\/li>\n<li>Weeds are removed by using weedicides.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" src=\"https:\/\/i1.wp.com\/ncertsolutions.guru\/wp-content\/uploads\/2020\/05\/NCERT-Solutions.png?resize=180%2C18&#038;ssl=1\" alt=\"Crop Production and Management Class 8 Extra Questions and Answers Science Chapter 1\" width=\"180\" height=\"18\" data-recalc-dims=\"1\" \/><\/p>\n<p>Question 2.<br \/>\nChoose the correct option and rewrite the sentence again. Weeding\/Feeding is the process of removal of weeds.<br \/>\nAnswer:<br \/>\nWeeding is the process of removal of weeds.<\/p>\n<p>Question 3.<br \/>\nWhat is the process of loosening and turning of the soil called?<br \/>\nAnswer:<br \/>\nTilling or ploughing.<\/p>\n<p>Question 4.<br \/>\nWhat are the big pieces of soil in the ploughed field called?<br \/>\nAnswer:<br \/>\nCrumbs.<\/p>\n<p>Question 5.<br \/>\nName the main tools used for ploughing?<br \/>\nAnswer:<br \/>\nPlough, hoe, and cultivator.<\/p>\n<p>Question 6.<br \/>\nWhat is meant by good quality seeds?<br \/>\nAnswer:<br \/>\nIt means clean and healthy seeds that yield good crops both in quality and quantity.<\/p>\n<p>Question 7.<br \/>\nWhat name is given to the manure obtained from plant and animal waste?<br \/>\nAnswer:<br \/>\nOrganic manure.<\/p>\n<p>Question 8.<br \/>\nName the chemical substances which are rich in a particular nutrient?<br \/>\nAnswer:<br \/>\nFertilizers.<\/p>\n<p><img loading=\"lazy\" src=\"https:\/\/i1.wp.com\/ncertsolutions.guru\/wp-content\/uploads\/2020\/05\/NCERT-Solutions.png?resize=180%2C18&#038;ssl=1\" alt=\"Crop Production and Management Class 8 Extra Questions and Answers Science Chapter 1\" width=\"180\" height=\"18\" data-recalc-dims=\"1\" \/><\/p>\n<p>Question 9.<br \/>\nName the bacterium present in the nodules of the roots of leguminous plants which fixes atmospheric nitrogen.<br \/>\nAnswer:<br \/>\nRhizobium.<\/p>\n<p>Question 10.<br \/>\nName the process of supply of water to crops at different intervals?<br \/>\nAnswer:<br \/>\nIrrigation.<\/p>\n<p>Question 11.<br \/>\nWhat are two latest irrigation methods that help us to use water economically?<br \/>\nAnswer:<br \/>\nSprinkler system and Drip system.<\/p>\n<p>Question 12.<br \/>\nWhat do we call the undesirable plants which grow along with the main crop unpurposely?Answer:<br \/>\nWeeds.<\/p>\n<p>Question 13.<br \/>\nWhat is the best time for the removal of weeds?<br \/>\nAnswer:<br \/>\nBefore they produce flowers and seeds.<\/p>\n<p>Question 14.<br \/>\nWhat are the chemicals used to control weeds Called? Give one example.<br \/>\nAnswer:<br \/>\nWeedicides e.g., 2 and 4-D.<\/p>\n<h3>Crop Production and Management Class 8 Extra Questions Short Answer Type 1<\/h3>\n<p>Question 1.<br \/>\nName some traditional methods to irrigate the field.<br \/>\nAnswer:<br \/>\nThe various traditional ways to irrigate the fields are :<\/p>\n<ol>\n<li>Moat (pulley system),<\/li>\n<li>Chain pump,<\/li>\n<li>Dhekli (lever system),<\/li>\n<li>Rahat.<\/li>\n<\/ol>\n<p><img loading=\"lazy\" src=\"https:\/\/i1.wp.com\/ncertsolutions.guru\/wp-content\/uploads\/2020\/05\/NCERT-Solutions.png?resize=180%2C18&#038;ssl=1\" alt=\"Crop Production and Management Class 8 Extra Questions and Answers Science Chapter 1\" width=\"180\" height=\"18\" data-recalc-dims=\"1\" \/><\/p>\n<p>Question 2.<br \/>\nWhy is weeding necessary?<br \/>\nAnswer:<br \/>\nWeeding is necessary since weeds compete with the crop-plants for water, nutrients, space and light.<\/p>\n<p>Question 3.<br \/>\nWhat is combine and w:hat is its use?<br \/>\nAnswer:<br \/>\nCombine is a combined harvester and thresher used for harvesting and threshing.<\/p>\n<p>Question 4.<br \/>\nExplain the term harvesting. How is it done?<br \/>\nAnswer:<br \/>\nHarvesting is cutting the crop after they are matured. It is done either by manually or by machine called harvester.<\/p>\n<p>Question 5.<br \/>\nHow do we store foodgrains?<br \/>\nAnswer:<\/p>\n<ol>\n<li>Dried neem leaves are used for storing food grains at home.<\/li>\n<li>For storing large quantities of grains in big godowns, specific chemical treatments are done to protect foodgrains from pest and microorganisms.<\/li>\n<\/ol>\n<p><img loading=\"lazy\" src=\"https:\/\/i1.wp.com\/ncertsolutions.guru\/wp-content\/uploads\/2020\/05\/NCERT-Solutions.png?resize=180%2C18&#038;ssl=1\" alt=\"Crop Production and Management Class 8 Extra Questions and Answers Science Chapter 1\" width=\"180\" height=\"18\" data-recalc-dims=\"1\" \/><\/p>\n<p>Question 6.<br \/>\nWhat precautions are undertaken before storing the foodgrains?<br \/>\nAnswer:<br \/>\nPrecautions undertaken before storing foodgrains are:<\/p>\n<ol>\n<li>Grains should be dried properly.<\/li>\n<li>Proper chemical treatment should be done to protect grains from insects, pests and microorganisms.<\/li>\n<\/ol>\n<h3>Crop Production and Management Class 8 Extra Questions Short Answer Type 2<\/h3>\n<p>Question 1.<br \/>\nMention any six agricultural practices.<br \/>\nAnswer:<br \/>\nThe activities or tasks are used as agricultural practices are listed below :<\/p>\n<ul>\n<li>Preparation of soil<\/li>\n<li>Sowing<\/li>\n<li>Adding manure and fertilisers<\/li>\n<li>Irrigation<\/li>\n<li>Protecting from weeds<\/li>\n<li>Harvesting<\/li>\n<li>Storage<\/li>\n<\/ul>\n<p>Question 2.<br \/>\nWhy storage of food grains are essential? Name two structures for storage of grain.<br \/>\nAnswer:<br \/>\nStorage of produce is an essential task. The harvested grains are to be kept safe from moisture insects, rats and micro\u00adorganisms. Harvested grains have more moisture. So the grains are properly dried in the sun to reduce the moisture in them. This prevents the attack by insect pests, bacteria and fungi.<\/p>\n<p>Methods of storing grains :<\/p>\n<ul>\n<li>Farmers store grains in jute bags or metallic bins.<\/li>\n<li>Large scale storage of grains is done in silos and granaries.<\/li>\n<\/ul>\n<p>Question 3.<br \/>\nDescribe the use of seed drill.<br \/>\nAnswer:<br \/>\nThe seed drill is used for sowing seeds with the help of tractors. This tool sows the seeds uniformly at a proper distance and depth and cover seeds by soil. This prevents damage caused by birds and also saves time and labour.<\/p>\n<p><img loading=\"lazy\" src=\"https:\/\/i1.wp.com\/ncertsolutions.guru\/wp-content\/uploads\/2020\/05\/NCERT-Solutions.png?resize=180%2C18&#038;ssl=1\" alt=\"Crop Production and Management Class 8 Extra Questions and Answers Science Chapter 1\" width=\"180\" height=\"18\" data-recalc-dims=\"1\" \/><\/p>\n<p>Question 4.<br \/>\nHow is organic manure prepared?<br \/>\nAnswer:<br \/>\nFor preparing manure, plant and animal waste is dumped in pits at open places and allowed to decompose. The decomposition is facilitated by some microorganisms. The decomposed matter is called organic manure.<\/p>\n<p>Question 5.<br \/>\nWhy is the organic manure considered better than fertilizers?<br \/>\nAnswer:<br \/>\nThe organic manure is considered better than fertilizers because :<\/p>\n<ol>\n<li>it enhances the water holding capacity of soil.<\/li>\n<li>it makes the soil porous due to which exchange of gases becomes easy.<\/li>\n<li>it increases the number of friendly microbes.<\/li>\n<li>it improves the texture of the soil.<\/li>\n<\/ol>\n<p>Question 6.<br \/>\nWhat is crop rotation? What is its advantage?<br \/>\nAnswer:<br \/>\nThe crop rotation is replenishment of soil with nutrients by avoiding the cultivation of the same crop year after year. It can be done by growing another crop alternately.<\/p>\n<p>Question 7.<br \/>\nWhat is the benefit of irrigation?<br \/>\nAnswer:<br \/>\nWhen crops are irrigated, nutrients get dissolved in water and get transported to each part of the plants along with water.<\/p>\n<h3>Crop Production and Management Class 8 Extra Questions Long Answer Type<\/h3>\n<p>Question 1.<br \/>\nWhat.are fertilizers and manure? How are they produced? How are they different from one another?<br \/>\nAnswer:<br \/>\nThe substances which are added to the soil in the form of nutrients for the healthy growth of plants are called manure and fertilizers.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 &#8216;<\/p>\n<p>Fertilizers are chemical substances which are rich in a particular nutrient. These are produced in factories. Manure is an organic substance which is obtained from the decomposition of plant and animal wastes.<\/p>\n<p>A fertilizer is different from manure in the following ways:<\/p>\n<table border=\"2\">\n<tbody>\n<tr>\n<td style=\"text-align: center;\" width=\"399\">Fertilizer<\/td>\n<td style=\"text-align: center;\" width=\"399\">Manure<\/td>\n<\/tr>\n<tr>\n<td width=\"399\">Fertilizers are prepared in the factories.<\/td>\n<td width=\"399\">Manure is prepared in the fields.<\/td>\n<\/tr>\n<tr>\n<td width=\"399\">Fertilizers do not provide any humus to the soil.<\/td>\n<td width=\"399\">Manure provides a lot of humus to the soil.<\/td>\n<\/tr>\n<tr>\n<td width=\"399\">Fertilizers are very rich in plant nutrients like nitrogen, phosphorus and potassium.<\/td>\n<td width=\"399\">Manure is not very rich in plant nutrients.<\/td>\n<\/tr>\n<tr>\n<td width=\"399\">Fertilizer is an inorganic substance.<\/td>\n<td width=\"399\">Manure is a natural substance obtained by the decomposition of cattle dung, human waste and plant residues.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Question 2.<br \/>\n(a) Why does farmer follow crop rotation practice in his field?<br \/>\n(b) What will happen if a farmer does not plough his. field before sowing the seeds? Write any two effects.<\/p>\n<p>Answer:<br \/>\n(a) Crop rotation is done by growing legume crops and cereal crops like wheat alternately on the same piece of land. Rhizobium bacteria present in the nodules of the roots of leguminous plants helps in the replenishment of the soil with nitrogen. They fix atmospheric nitrogen.<\/p>\n<p>(b) When a farmer doesn\u2019t plough his field before sowing, this may have the following effects:<\/p>\n<ol>\n<li>Ploughing helps in proper mixing of manure in the soil and turning the soil over.<\/li>\n<li>Ploughing helps the water to go penetrate through the soil and reach the roots.<\/li>\n<li>Ploughing improves air circulation so that roots can respire easily.<\/li>\n<li>Ploughing improves the water-retaining capacity of the soil.<\/li>\n<\/ol>\n<p><img loading=\"lazy\" src=\"https:\/\/i1.wp.com\/ncertsolutions.guru\/wp-content\/uploads\/2020\/05\/NCERT-Solutions.png?resize=180%2C18&#038;ssl=1\" alt=\"Crop Production and Management Class 8 Extra Questions and Answers Science Chapter 1\" width=\"180\" height=\"18\" data-recalc-dims=\"1\" \/><\/p>\n<p>Question 3.<br \/>\n(a) What are fertilizers?<br \/>\n(b) Write any two disadvantages of using fertilizers excessively.<\/p>\n<p>Answer:<br \/>\n(a) A fertilizer is an inorganic salt prepared in factories. Fertilisers are very rich in plant nutrients like nitrogen, phosphorus and potassium (NPK), urea etc.<\/p>\n<p>(b) (i) Fertilisers are becoming a source of water pollution.<br \/>\n(ii) Excessive use of fertilisers makes the soil less fertile.<br \/>\n(iii) Long-term use of chemical fertilizer changes the nature (pH) of the soil.<br \/>\n(iv) Excessive application of fertilizers affects the environment negatively.<\/p>\n<p>Hope the knowledge provided regarding the Crop Production and Management Class 8 Extra Questions and Answers has helped you to the possible extent. For more info feel free to reach us and we will guide you at the earliest possibility. Stay connected to our site to avail latest updates on Extra Questions for Various Classes instantly.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Crop Production and Management Class 8 Extra Questions and Answers Science Chapter 1 PDF are solved by experts and will guide students in the right direction. Students can get how to tackle different questions easily by solving the Extra Questions for Class 8 Science Question bank on a regular basis. Class 8 Science Chapter 1 &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/ncertsolutions.guru\/crop-production-and-management-class-8-extra-questions\/\"> <span class=\"screen-reader-text\">Crop Production and Management Class 8 Extra Questions and Answers Science Chapter 1<\/span> Read More &raquo;<\/a><\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[7],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v16.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Crop Production and Management Class 8 Extra Questions and Answers Science Chapter 1 - NCERT Solutions<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ncertsolutions.guru\/crop-production-and-management-class-8-extra-questions\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Crop Production and Management Class 8 Extra Questions and Answers Science Chapter 1 - NCERT Solutions\" \/>\n<meta property=\"og:description\" content=\"Crop Production and Management Class 8 Extra Questions and Answers Science Chapter 1 PDF are solved by experts and will guide students in the right direction. 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