Your email address will not be published. The next step would be multiplying it. For example, crops with tolerance to high salinity soil. Cropping pattern. 6. Crop production improvement, Crop protection improvement. The crop canopy means the structure of leaves, stems and flowers found above ground. The topics that are covered under this chapter include: Improvement in crop yields (1 question) Crop variety improvement (2 questions) Crop production management (3 questions) Crop protection management (3 questions) Q2. RPS Class - 9 Biology, Ch - 15 factors of crop variety improvement CROP VARIETY IMPROVEMENT - 2. Production practices show a wide variation among farmers in India. For example, dwarfness in cereals reduces the nutrient consumption without affecting the yield. A pest causes damage to our crops by feeding. Food crops are crops that contribute to the world’s major food supply. Watch Queue Queue. India is a big country with a billion plus population. Moreover, this definition also harps on the safe and nutritious food which is affordable to each member of the population. Crop variety improvement: It can be done either by hybridisation or by introducing a gene. Crop Production Management ,Improvement in Food Resources - Get topics notes, Online test, Video lectures, Doubts and Solutions for CBSE Class 9 on TopperLearning. Plant breeders select plant varieties with desired character and cross them. Crop variety improvement: Varietal improvement means combining desirable characteristics in one and multiplying it. Science NCERT Grade 9, Chapter 15, Improvement in Food Resources as the name suggests, deals with concepts of various techniques of improvement carried out in different aspects of food resources. Varieties resistant to these factors can improve crop production. 2. Enrolled Students 115. What do you mean by genetically modified crops? The crops can be grown even in diverse conditions. ... Class 10 Class 12. Describe the mechanism of crop variety improvement. In order to meet the demands with limited resources, we need to apply a greater effort. Hybridisation is the crossing between genetically dissimilar plants to obtain crops having useful characteristics like disease resistance,good- … Legumes and dried beans have a longer shelf-life and are economical. Crop variety improvement, crop production improvement and crop protection management are three major ways to improve food crops production. This helps in a higher yield in less expenditure. The short maturity period of crops helps farmers in multiple rounds of cultivation in less expenditure during a short period. 9th Class Chapter No 15 - Improvement in food resources in Science for CBSE NCERT . These include rice, wheat, maize, barley, etc. Genes are responsible for the traits. Seeds and nuts are the powerhouses of energy and a concentrated form of food. You can also get free sample papers, Notes, Important Questions. Food provides us with the nutrients and energy that we need for the proper functioning and growth of the body. (iv) Wider adaptability : Crops which can grow in different conditions, will help in setting high production. There are two different categories of cropping pattern: 1. Introducing the gene from BT equips cotton with an ability to ward off attacks from different types of insect pests. Some places get plenty of rainfall, while some others may not get rainfall at all. Maturity period: To shorten and to develop uniform maturity period. Differentiate between Rabi and Kharif crops. 2) One crop is tall growing and other is short growing. Watch Queue Queue Quality product: To improve the quality of the food crops. Class 9 Science Chapter 15 Improvement in Food Resources Importance This chapter deals with teaching students about different types of crops and how we can improve their production. Higher yield: Crop variety improvement’s main goal is to increase the productivity of the crop. Improvement in Crop Yield. Sources of carbohydrate: Wheat, maize, millets, sorghum, etc.Sources of protein: pulses, meat, fish, etc.Sources of fat: Oilseeds, milk, butter, etc.Minerals and vitamins: Vegetables, spices and fruits.Fodder crops: Berseem, oat, sudan grass, etc. and abiotic factors like hot, cold, drought, salinity, etc. Crop Variety Improvement. Improvement in Food Resources Class 9 Extra Questions Long Answer Questions. 5. These mainly comprise leaves, stems, flowers, roots and seeds. Class 9 Biology Improvement Food Resources. The crop is selected by breeding for various useful characteristics; like disease resistance, response to fertilizers, product quality and high yields. Area of land under cultivation cannot be increased beyond certain level. Jun 14,2020 - can anyone tell me plzz tha what is crop variety improvement? What is the need for improvement in food production? Herbs have a strong flavour. Describe the important factors for which variety improvement is done. The population explosion has led to a greater demand for basic requirements such as food, shelter, clothing, etc. By this technique, what we mean is the combination of desirable characteristics from many crops into a single hybrid crop. The crop is selected by breeding for various useful characteristics; like disease resistance, response to fertilizers, product quality and high yields. It helps in improving the yield of cotton. We can raise different strains of food crops with desirable traits naturally as well as scientifically. Watch Queue Queue This leads to the idea of improvement of food crops variety. Oil crops should give quality oil. Hybridization: The crossing between genetically dissimilar plants to produce a new variety is called hybridization. Answer: As we know, weather conditions, soil quality and availability of water are the main factors on which crop yield depends. Also, the uniform maturity of crops helps in easy harvesting. Thus, the strains we develop must be economically profitable. 3) Improvement in crop yield :- Crop yield can be improved by three main activities. (ii) Improved quality: The quality of crop products vary from crop to crop. Initially, the chapter, Improvement in Food Resources focuses on the improvement in crop … ‘no cost production’, ‘low cost production’ and ‘high cost production’. CBSE Class 9 Science (Biology) Chapter 15 Improvement in Food Resources Exercise Questions with Solutions to help you to revise complete Syllabus and Score More marks. Crop protection management are three major ways to improve food crop production requirements such as food, shelter clothing. First of all practically utilized in crop yield can be used in seasons when food is scarce Question disucussed. Variety is called hybridization crops are crops that contribute to the world ’ s main goal is to increase productivity! 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