They are a good source of nitrogen, phosphorus, and potassium. Here, we have provided the latest CBSE Class 1 to 12 MCQ Questions with Answers for all subjects to ace up your final examinations. (a) What is pisciculture? NCERT Solutions Apps 2020-21 based on Updated NCERT Book Solutions 2020-2021 for class 9 all subjects are also available. Choose the correct answer: Question 1. Question.1. Therefore, crops having different nutrient requirements are rotated. Continuous use can also destroy soil fertility. Leghorn and Aseel are related to What do we get from cereals, pulses, fruits and vegetables? Answer: It is the farming in which no chemical fertilizers, pesticides or herbicides are used. Visit to Discussion Forum to ask your doubts and share your knowledge. It is a ready to study material for class 9 student of CBSE Board. As a result, the food available in all the parts of the pond is used. Question 1. The ventilators if any should be closed tightly, to avoid birds visiting the storage house and destroying the grains. Then the students presented their group work in the assembly to spread the awareness and make students understand the importance of organic products. Question 1. Better adaptability to adverse environmental conditions. MCQ Questions for Class 9 Maths Chapter 15 Probability with Answers September 18, 2020 September 18, 2020 / By Prasanna Students can access the NCERT MCQ Questions for Class 9 Maths Chapter 15 Probability with Answers Pdf free download aids in your exam preparation and you can get a good hold of the chapter. Culture fishing: It is done by fish farming. Answer: Desirable agronomic characteristics for crop improvements are: Name any two weeds. Name two kharif crops. (a) Indian cow (b) Indian buffalo Why are manures and fertilizers used in fields? The other way is by fish farming, which is called culture fishery. A group of Eco Club students made a compost pit in the school, they collected all bio-degradable waste from the school canteen and used it to prepare the compost. Question 1. (iii) They need less space and in this condition they grow fast and have low morality. During cross breeding, the desired characters are taken into consideration. Copyright 2021 by Tiwari Academy – A step towards Free Education. (c) pisciculture (d) poultry. The only way you can answer these questions with ease is if you were attentive. If you are a student of class 9 who is using NCERT Textbook to study Science, then you must come across Chapter 6 Tissues. (a) Production of vegetables and fruits commercially is called horticulture. Hence, option (c) will give the most benefits. Answer: There are two ways of obtaining fish. For example, legumes which have nitrogen-fixing bacteria in their root nodules supply the soil with nitrogen. Answer:  Nitrogen, phosphorus, potassium are examples of How can this be avoided? Question 13. पौधों की वृद्धि के लिए पोषक 16 तत्वों की आवश्यकता होती है। इनमें से 13 पोषकों को पौधे मिट्टी से प्राप्त करते हैं। मिट्टी से प्राप्त होने वाले पोषकों में से 6 पोषकों की अधिक मात्रा में आवश्यकता होती है। जिन्हें वृहत पोषक कहते हैं। ये वृहत 6 पोषक नाइट्रोजन, फॉस्फोरस, पोटैशियम, कैल्सियम, मैग्नीशियम और सल्फर हैं।. What are the advantages of inter-cropping and crop rotation? (c) weeds (d) pathogens, 4. What are the differences between broilers and layers and in their management? The level of vitamins A and K is kept high in the poultry feeds while layers require enough space and proper lightning. What management practices are common in dairy and poultry farming? Answer: Weeds can be controlled by different methods: Answer: Parthenium and Xanthium. What is pasturage and how is it related to honey production? Question 12. Science and Technology Solutions for Class 9 Science Chapter 13 - Carbon : An Important Element; Science and Technology Solutions for Class 9 Science Chapter 14 - Substances in Common Use; Science and Technology Solutions for Class 9 Science Chapter 15 - Life Processes in Living Organisms Question 17. Answer:  One method used for crop production which ensures high yield is plant breeding. Fodder crops — For livestocks. Answer: Pomphret, mackerel, tuna and sardines. (v) Reduce tilting. Answer: The factors responsible for loss of grains during storage are: Question 6. What are the harmful effects of fertilizer? The nature of soil changes to acidic or basic. The test-quiz below includes five of the topics we have covered so far. These species are selected so that they do not compete for food among them and are having different types of food habits. Diseases in plants are caused by pathogens. Name the products obtained from apiculture. (ii) They are raised up to 6-7 weeks. Class 9 Science NCERT Textbook – Page 211 In text Questions. What are genetically modified crops? The common factor for increasing production in poultry, fisheries, and bee keeping is the proper management techniques that are to be followed. NCERT Solutions for Class 9 Science Chapter 15. What are the different ways/ methods of hybridisation? Answer:  Cattle farming is beneficial in the following ways: Question 8. Free PDF download of NCERT Solutions for Class 9 Science (Biology) Chapter 15 - Improvement in Food Resources solved by Expert Teachers as per NCERT (CBSE) Book guidelines. पशुओं की नस्ल सुधार के लिए प्रायः संकरण विधि का उपयोग किया जाता है। इस विधि में देशी (रोग प्रतिरोधक क्षमता) और विदेशी (लंबा दुग्ध स्त्रवणकाल) नस्लों के बीच संकरण कराने पर संकल नस्लें उत्पन्न होती हैं जिसमें दोनों के एच्छिक गुण (रोग प्रतिरोधक क्षमता तथा लंबा दुग्ध स्त्रवणकाल) होते हैं।. (a) Weedicides: These are the chemicals sprayed on the weeds to kill them. (iv) Breeding: The crossing of different variety of milch animals to obtain a breed that can produce more yield of milk. Aquaculture: It is done both in fresh water and in marine water. One is from natural resources, which is called capture fishing. (a) freshwater fish (b) marine water fish Biotic factors like insects, rodents, birds, mites and bacteria. Abiotic factors like moisture (present in foodgrains), humidity (of air) and temperature. Page No: 204. Combination of both biotic and abiotic factors causes : Question 2. Genetic manipulation is useful in developing varieties which shows: Question 5. Question 4. (ii) It can also deal with less monsoon or drought because crop which needs less water can easily survive.  Name two exotic breeds of cattle. A man is carrying the heavy luggage from one platform to the other of a Railway station but still according to the logics of science his work done is said to be zero. Topics and Sub Topics in Class 9 Science Chapter 15 Improvement in Food Resources: These solutions are part of NCERT Solutions for Class 9 Science. NCERT Solutions for Class 9 Science Chapter 15 Improvement in Food Resources in PDF form free to download for academic session 2020-21. To get rid of pathogens, some preventive measures and biological control methods are used as they are simple, economic and minimise pollution without affecting the soil quality. The environmentalist gave power plant the solution to this problem. State the preventive and control measures used before grains are stored. (i) Shelter: The shelter should be clean, spacious and airy. Answer: Question 1. How is it useful in agricultural practices? Answer: Genetic manipulation is a process of incorporating desirable (genes) characters into crop varieties by hybridisation. Crop-rotation: (i) Farmers can grow two or three crops in a year. Answer:  1—(c), 2—(b), 3—(c), 4—(a), 5—(c), 6-(a), 7-(a), 8—(c), 9—(b), 10—(d). Class 10 - Biology Chapter: Life Processes Assertion Reasoning Type Questions From session 2019-20 onwards, CBSE introduces a new... CBSE Class 10 - Chemistry - Assertion Reason Based Questions (#classs10Chemistry)(#eduvictors)  Apis cerana indica is commonly known as Answer: Question 15. He also saw the increased number of cancer patients in his town. Then, if the same crop is grown in subsequent seasons those nutrients will get depleted in the soil. Extra Questions for Class 10th: Ch 15 Our Environment (Science) Important Questions Answer Included Very Short Answer Questions (VSAQs): 1 Mark The bags should be stacked in order i.e. NCERT solutions for Class 9 Science Chapter 11 Work and Energy helps you lay a good foundation for your exam preparation. When the gene for a particular character is introduced in a plant cell, a transgenic plant is produced. Answer:  Different ways/patterns / systems of growing crop’s are: NCERT solutions for Class 9 Chapter 15 Improvement in Food Resources is presented here to aid the students in their CBSE Class 9 exam preparation and to help them understand the basic concepts in the chapter thoroughly. Question 17. (c) Farmers use quality seeds, adopt irrigation, use fertilizer and use crop protection measures. Maintenance requirement – food required to keep animal healthy. (ii) Use canals if available and river lift system if flow of water is slow. Question 16. फसल की सुरक्षा के लिए निरोधक विधियाँ तथा जैव नियंत्रण इसलिए अच्छा समझा जाता हैं ताकि उत्पाद को हानि पहुँचाने वाले जैविक कारक जैसे कीट, कृंतक, कवक, चिंचडी तथा जीवाणु आदि मर जाएँ और भंडारण के बाद भी उत्पाद की गुणवत्ता कायम रहे।. (iv) Use tanks and pounds which can store rain-water. फसल की सुरक्षा के लिए निरोधक विधियाँ तथा जैव नियंत्रण क्यों अच्छा समझा जाता हैं? (c) Product quality and (d) High yield. What are the desirable agronomic characteristics for crop improvements? Answer: Cross breeding is a process in which indigenous varities of cattle are crossed by exotic breeds to get a breed which is high yielding. What are macro-nutrients and why are they called macro-nutrients? Dwarfness is required for cereals, so that less nutrients are consumed. A few row of one crop alternate with a few rows of second crop. (c) apiculture (d) poultry, 9. What are fertilizers? (b) The green plants like guar or sun hemp are turned into the soil which enriches the soil with nitrogen and phosphorus and is called green manure. (b) Dwarfness is desired in cereals, so that less nutrients are consumed by these crops. (c) What values of Eco Club students are reflected in this act? Check the below NCERT MCQ Questions for Class 9 Science Chapter 3 Atoms and Molecules with Answers Pdf free download. आनाजों (गेंहूँ, बाजरा, ज्वार, चावल, मक्का आदि) से हमें कार्बोहाइड्रेट्स प्राप्त होते हैं।. Answer: Most of agriculture in India is rain-fed, several different kinds of irrigation system are adopted to supply water to agricultural lands. Abiotic factors like moisture (present in food grains), humidity (of air) and temperature. What are the advantages of inter-cropping and crop rotation? Biology experts will give you step-wise answers to explain concepts such as eukaryotic cells, prokaryotic cells, chloroplast, Golgi apparatus, chromosomes, nucleus and more. Answer: In this, (c) Farmers use quality seeds, adopt irrigation, use fertilizer and use crop protection measures. पशुओं की नस्ल सुधार के लिए प्रायः कौन-सी विधि का उपयोग किया जाता है और क्यों? What Policies Can Help Students Affected by COVID-19. Example, soyabean + maize or bajra + lobia 9th Science chapter 15 question answers of intext on Page 204 & 205 or Page 206 & 207 or Page 208 & 209 or Page 210 & … NCERT Solutions for Class 9 Science helps students in boosting their self-confidence while preparing for the examination. Such draught animals are engaged in agricultural fields for labour work such as carting, irrigation, tilling, etc. What are the advantages of composite fish culture? Answer: Keeping bee for obtaining honey commercially is called apiculture.

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