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9 Improvement in Food Resources Question with Solution 1. State one demerit with composite fish culture system. [2010 (T-I)] Ans: fish breed only during during monsoon monsoon and lack of of availability of good quality quality seeds 2. State one importance of photoperiod in agriculture. [2010 (T-I)] Ans: photoperiod photoperiod in agriculture agriculture provide provide adequate adequate light for for flowering 3. Name one micronutrient and one macronutrient which plants take from the soil. [2010 (T-I)] Ans: Macronutrients Macronutrients are: Calcium Calcium (Ca) (Ca) , Magnesium (Mg) Micronutrients Micronutrien ts are: Boron (B) Chloride (Cl) 4. List two desirable traits for fodder crops.[2010 crops.[2010 (T-I)] Ans: Tallness and and profused branching branching are the desired characterist characteristics ics for producing producing a higher yield of fodder crops. 5. Distinguish between a mullet and a prawn. [2010 (T-I)] Ans: Mullet is a type type of fish while prawn is a crustacean. crustacean. Both live in water and and serve as a food supplement supplement worldwide. worldwide. prawn belongs to group arthropoda whereas mullet belongs to group pisces. so you can use their characteristic features to distinguish between the two 6. Name two breeds breeds of cows selected for long lactation period. period. [2010 (T-I)] Ans: After giving the the birth of a calf calf ,a cow secretes secretes milk.the duration duration of milk milk secretion of a cow that is the period of time till which the cow secretes milk is known as lactation l actation period.brownsw period.brownswiss iss and jersey are selected for their long lactation period. 7. How does Bombay duck differ from common carp ? [2010 (T-I)] Ans: Bombay Bombay duck is a marine marine fish, while common common carp carp is a fresh water water fish. 8. How does catla differ from mrigal? [2010 (T-I)] Ans: Catla belongs belongs to genus genus Catla while mrigal mrigal belongs belongs to genus Cirrhinus Cirrhinus 9. Name the two vitamins which are added in the poultry feed. [2010 (T-I)] Ans: vitamins A and K 10. From where do plants acquire the following nutrients? [2010 (T-I)] (a) Nitrogen Ans: (a) Nitrogen from soil
(b) Hydrogen
(b) Hydrogen Hydrogen from water water
11. State the reason of introducing Italian bee variety in bee farms. [2010 (T-I)] Ans: An Italian bee bee variety, A. mellifera, mellifera, has also also been brought brought in to increase yield yield of honey. 12. Mention any two activities for the i mpro mproveme vement nt of crop yield. [2010 (T-I)] Ans: The major major activities for improving crop yields are : • Crop variety improvement • Crop production improvement • Crop protection management. 13. Which nutrients are supplied by cereals and pulses ? [2010 (T-I)] Ans: carbohydrate and protein. protein.are are supplied by cereals and pulses respectively, 14. Name two fresh initiatives taken to i ncrease the water availability for agriculture. agriculture. [2010 (T-I)] Ans: Two new irrigation systems systems have been developed developed to save water and increase the the availability of of water to the crops. These are: 1) Drip irrigation system: Here, water is supplied to the roots of the plants directly in a drop wise manner. This prevents unnecessary wastage of water. 2) Sprinkler system: Here water is sprinkled over the crops like it happens in rain. So, water is absorbed by the soil in a better way. 15. Mention any two advantages of using Italian bee variety in honey production. [2010 (T-I)]
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Ans: The Italian Italian bees have high high honey collection capacity. capacity. They sting sting somewhat somewhat less. They stay in a given beehive beehive for long periods, and breed very well. 16. Name any two weeds of crop field. [2010 (T-I)] Ans: Xanthium (gokhroo), Parthenium (gajar ghas),Cyperinus rotundus (motha). 17. Define animal husbandry. [2010 (T-I)] Ans: Animal Animal husbandry is the management management and and care of farm animals by humans humans for profit profit 18. What are genetically modified crop? [2010 (T-I)] Ans: GM (Genetically (Genetically modified) modified) crops are the crops crops in which a gene from some other organism organism may may be another plant plant or a microorganism is inserted into the plant to get desired characteristic such as disease resistance, response to fertilizers, fertili zers, product product quality and high yields. For example: Cotton, Maize, Papaya, Soybean, Sugarbeet, Squash , etc. 19. Mention the components of food present in vegetable and fruits. [2010 (T-I)] Ans: Vegetables, Vegetables, spices and fruits fruits provide a range of vitamins vitamins and minerals in addition addition to small small amounts of proteins, proteins, carbohydrates carbohydrates and fats. 20. Name the cereals which provide us carbohydrate for energy requirement. [2010 (T-I)] Ans: Cereals such as wheat, rice, rice, maize, millets millets and sorghum sorghum provide us carbohydrate carbohydrate for energy energy requirement. requirement. 21. Give technical term for milk producing females and farm labour animals. [2010 (T-I)] Ans: Milk-producing Milk-producing females females are called called milch animals animals (dairy animals), animals), while while the ones ones used for farm labour are are called draught animals 22. Why do we eat pea and groundnut? [2010 (T-I)] Ans: pea (arhar) (arhar) provide provide us protein protein where as as ground nut nut provide us with necessary fats. fats. 23. Mention two examples of mixed cropping. Ans: Some combinations combinations of mixed mixed cropping are :Wheat and Mustard Maize and urad (pulse) Groundnut and sunflower 24. Name two factors responsible for losses of grains during storage? Ans: Factors responsible responsible for for such losses are are biotic— biotic — insects, rodents, fungi, mites and bacteria, and abiotic — inappropriate moisture and temperatures in the place of storage. 25. (a)Name an exotic variety of honey bee grown in India. (b) What is called the rearing of fish on a large scale? Ans: (a)Pisciculture (a)Pisciculture
(b) Apis (b) Apis Cerana Cerana indica
26. Name two exotic cattle breed with long lactation period? period? [2014 (T-I)] Ans: the period of milk production after the birth of a calf is called lactation period. Jersey and Brown Swiss are two exotic cattle breed having l ong lactation period. 27. In what way way boilers, feed is different from layers? [2014 (T-I)] Ans: Broilers Ans: Broilers feed is protein rich with adequa adequate te fat. The level of vitamins A and K is kept high in the poultry feeds. 28. Which one boiler or layers mature earlier? [2014 (T-I)] Ans: Broilers Ans: Broilers have fast growth rate 29 What type of shelter is provided to boiler and layers? [2014 (T-I)] Ans: Broilers Ans: Broilers do not require much space and lighting 30. Mention the preventive and control measure used before grain are stored? Ans: cleaning of the the produce produce before storage, proper proper drying of of the produce produce first in sunlight sunlight and then then in shade, shade, and fumigation using chemicals chemicals that can kill pests. 31. List two biotic bi otic and abiotic factor each that responsible for grain loss?
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Ans: Factors responsible responsible for for grain losses losses are biotic— biotic — insects, rodents, fungi, mites and bacteria, and abiotic— abiotic — inappropriate moisture and temperatures in the place of storage. 32.What do we call the kind of farming with no use of chemicals? Ans: organic organic farming 33.Write the basis of the selection for inter croppin cropping? g? Ans: The crops for for inter cropping cropping are selected selected such that their their nutrient requireme requirements nts are different. different. 34. Mention the steps farmer taken to achieve 4 times increase in production of crops from 1960 to 2004. Ans: The steps farmer farmer taken to achieve 4 times increase in production production of of crops are: (a) Crop variety improvement (b) Crop production production improvemen improvementt (c) 35. State the advantages of inter cropping and crop rotation over single cropping? Ans: inter cropping cropping and crop crop rotation ensures ensures maximum maximum utilisation of the nutrients supplied, supplied, and also prevents prevents pests and diseases from spreading to all the plants belonging to one crop in a field. This way, both crops can give better returns. 36. What do we call milk producing female animals and animals used for farm labour. Ans: Milk-producing Milk-producing females females animals animals are called called milch animals animals (dairy animals), animals), while the the animals animals used for farm labour are called draught animals 37. How is a major problem of the lack of availability of good quality seed in fish farming overcome? Ans: To overcome overcome this problem, problem, ways have now been been worked out to breed these these fish in ponds ponds using hormon hormonal al stimulation. This has ensured the supply of pure fish seed in desired quantities 38. What is genetic manipulation? manipulation? How it is useful in agriculture? Ans: : Genetic manipulation manipulation is a process in which which genes of desirable characters characters are are taken from from a plant and and transferred transferred to another plant by the technique of hybridisation. Genetic manipulation helps in obtaining desirable agronomic characters liked Dwarfness in cereals and tallness and profuse branching in fodder crops. It i s useful in develop developing ing varieties with higher yield, good quality, biotic and abiotic resistance, short maturity period, wider adoptability and desirable agronomic agronomic characteristics. 39. Name two Indian bee variety. Ans: A. dorsata, the rock bee 40. For increasing production, what is common in poultry, fisheries and bee-keeping? Ans: For increasing increasing production production cross cross breeding breeding and use of of imported imported species are comm common on in poultry, fisheries fisheries and beekeeping. 41. What are bio-fertilizer? Ans: bio-fertilizer bio-fertilizer are micro micro organism organism which enrich the the soil in nutrients nutrients by their their biological biological activity eg. Rhizobium or cyanobacteria 42. How Rhizobium or cyanobacteria enrich the soil with nutrients Ans: Rhizobium or cyanobacteria cyanobacteria fix free nitrogen nitrogen of atmosphere atmosphere into into nitrogen compou compound nd that increase increase soil fertility. fertility. 43. Mention three agronomic characteristics for crop improvement? Ans: Tallness and profuse branching are desirable characters for fodder crops. Dwarfness is desired in cereals. 44. Explain the desirable traits obtain after cross breeding indigenous and exotic breed of poultry bird? Ans: (i) Ans: (i) number and quality of chicks; (ii) dwarf broiler parent for commercial chick production; (iii) summer adaptation capacity/tolerance to high temperature; (iv) low maintenance requirements;
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(v) reduction in the size of the egg-laying bird with ability to utilize more fibrous cheaper diets formulated using agriculturall by-products agricultura 45. : What are the advantages of inter-cropping and crop rotation over single cropping? Ans: Inter-cropping Inter-cropping and crop rotation are used to obtain obtain maximum maximum benefit. Inter-cropping Inter-cropping helps helps in preventing preventing pests and diseases to spread throughout the field. It also increases soil fertility, whereas crop rotation prevents prevents soildepletion, increases soil fertility, and reduces soil erosion. Both these methods reduce the need for fertilizers. It also helps in controlling weeds and controls the growth of pathogens and pests in crops. II. Short Answer Questions – Questions – I I (2 marks) Previous Years’ Questions 1. List any two methods adopted in farming farming for the health of the cattle. [2010 (T-I)] Ans: Proper cleaning and shelter facilities 2. List the two types of food requirements requirements of dairy animals. [2010 (T-I)] Ans: Animal feed includes: (a) (a) roughage, roughage, which is largely largely fibre, and and (b) concentrates, concentrates, which which are low in fibre fibre and contain relatively high levels of proteins and other nutrients 3. What are Rabi crops? State any two examples. [2010 (T-I)] Ans: The crops crops are grown grown in the winter winter season from November November to April is called called the rabi rabi crops . wheat, wheat, gram, peas, peas, mustard, linseed are rabi crops 4. List two deme demerits rits of the continuous use of fertilizers. [2010 (T-I)] Ans: water pollution pollution and loss of fertility fertility 5. List any two advantages advantages of crop rotation. rotation. [2010 (T-I)] Ans: The growing growing of different different crops on a piece of land in a pre-planned pre-planned succession is known as crop crop rotation. Rotation of crops improves improves the fertility of the soil . Saves nitrogenous nitrogenous fertilizers and help in weed weed control and pest control. 6. List two characteristics each of roughage and concentrate in relation to animal feed. [2010 (T-I)] Ans: Roughage Roughage has large large amount amount of fibre and concentrates concentrates have low amount of fibre and contain contain relatively relatively high levels of proteins and other nutrients. 7. Mention the two types of food requirements of dairy animals. [2010 (T-I)] Ans : roughage roughage and proteins proteins 8. "Removal of weeds from cultivated fields during the early stages of growth of crops is essential for a good harvest". Justify the statem statement.[2010 ent.[2010 (T-I)] Ans: Weeds compete compete for food, space space and light. Weeds take up nutrients and and reduce the growth growth of the crop. Therefore Therefore Removal of weeds from cultivated fields during the early stages of growth of crops is essential for a good harvest 9. Farmers use bee-keeping as an additional income generating activity. Give two reasons.[2010 (T-I)] Ans: it requires requires low investments investments and and In addition addition to honey, honey, the beehives beehives are a source source of wax wax which generate extra extra income. 10. (a) Name any one bottom feeder that can be grown in composite fish culture. [2010 (T-I)] (b) What are the problems faced in such a culture ? How are they overcome? Ans: (a) Mrigals (a) Mrigals and Common Carps are bottom feeders that can be grown in composite fish culture (b) A major problem in fish farming is the lack of availability of good quality seed. To overcome this problem we allow fish to breed in ponds using hormonal stimulation. This has ensured the supply of pure fish seed in desired quantities. 11. The shorter the duration of the crop the more economical is the variety. Justify this statement. [2010 (T- I)]
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Ans: The shorter shorter the duration duration of the crop crop from sowing to harvesting, harvesting, the more more economical economical is the variety. This is because short durations allow farmers to grow multiple rounds of crops in a year. This reduces the cost of crop production. 12. What are the long term benefits of using manure in crop production? [2010 (T-I)] Ans: Manure helps helps in enriching enriching soil with nutrients nutrients and organic organic matter and increasing soil fertility 13. What are macro-nutrients and why are they called macronutrients? Ans: Nutrients that that are required required in large large quantities quantities by plants for for growth are are called macronutrien macronutrients. ts. Since They are are required in larger amount so they are known as macronutrients. Eg - nitrogen , phosphorus , potassium , calcium , magnesium and sulphur 14. How can insect/pests in crop plants and stored grains be controlled? [2010 (T-I)] Ans: One of the most commonly commonly used methods methods is the use of of pesticides, which which include herbicides, insecticides insecticides and and fungicides. These chemicals are sprayed on crop plants or used for treating seeds and soil. 15. What is meant by the term 'green manure'? State its role in agriculture. [2010 (T-I)] Ans: When green green plants plough plough into the soil they decompose and turn into manure. These manure are called green manure .Green .Green manure helps in enriching the soil in nitrogen and phosphorus. 16. How is green maturing done? How is it useful for the soil? [2010 (T-I)] Ans: Some plants plants like sun hemp hemp or guar are grown and then mulched mulched by ploughing ploughing them into the soil. These These green plants thus turn into green manure which helps in enriching the soil in nitrogen and phosphorus. 17. What is pasturag pasturage e and has how is it related to honey production? [2010 (T-I)] Ans: Pasturage refers to the flower from where where bees collect nectar. Pasturage Pasturage is related related to honey production production because because it determines the taste of honey and the quantity of honey 18. What are the desirable characters of bee varieties suitable for honey production? production? [2010 (T-I)] Ans: (a) have (a) have high honey collection capacity (b) stay in a given beehive for long periods, and breed very well. 19. How do biotic and abiotic factors affect crop production?[2010 (T-I)] Ans: Biotic factors such such as pests, insects insects and diseases diseases reduce reduce the crop production. production. A pest causes causes damage damage to our crops by feeding. Weeds also reduce crop productivity by competing with the main crop for nutrients and light. Similarly, abiotic factors such as temperature, temperature, wind, rain etc. affect the net crop production. For example example droughts and floods have a great impact on crops sometimes, destroying the entire crop. 20. What is meant by organic farming? [2010 (T-I)] Ans: Organic Organic farming is a farming farming system in which we focus the maximum maximum use of organic manures manures in place of chemicals fertilizers fertilizer s .Eg. blue green algae 21. Compare the use of manure and fertilizers in maintaining soil fertility. [2010 (T-I)] Ans: Manures Manures contains many many organic substances substances of biological biological origin origin which can be be easily degraded degraded and and absorbed absorbed by plants. Its helps in recycling of biological waste they increase soil fertility of the soil for long duration without causing any harm. The chemical fertilizers on other hand, improve soil fertility for short duration but cause environmental hazards.Continose hazards.Continose use of fertilizers in particular area causes destruction of the soil fertility. 22. What is i s meant by sustainable agriculture? agriculture? [2010 (T-I)] Ans: Agriculture that that increase food production production without without degrading degrading our environm environment ent and disturbing the ecological ecological balances. Note: - The concept of sustainable sustainable agriculture includes activities such as keeping the use of fertilisers and pesticides as low as possible while still producing high-yielding and good quality crops. This ensures that any adverse effects on
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the environment are minimised and helps to improve conditions for members of the local community by providing jobs and caring for the environment. 23. How do plants get nutrients?. [2010 (T-I)] Ans: Nutrients are are supplied supplied to plants by air, air, water and and soil. Air supplies carbon carbon and oxygen, hydrogen hydrogen comes comes from water, and soil supplies the other thirteen nutrients to plants. 24. Which of the following conditions conditions will give the most benefits? Why? (a) Farmers use high-quality seeds, do not adopt irrigation or use fertilizers. (b) Farmers use ordinary seeds, adopt irrigation and use fertilizer. (c) Farmers use quality seeds, adopt irrigation, use fertilizer and use crop protection measures. Ans: (c) Farmers Farmers using good quality seeds, seeds, adopting irrigation, using fertilizers, fertilizers, and using crop protection measures measures will derive most benefits. (i) The use of good quality seeds increases the total crop production. If a farmer is using good quality seeds, then a majority of the seeds will germinate properly, and will grow into a healthy plant. (ii) Proper irrigation methods improve the water availability to crops. (iii) Fertilizers ensure healthy growth and development in plants by providing the essential nutrients such as nitrogen, phosphorus, potassium, etc. (iv) Crop protection measures include various various methods to control weeds, pests, and infectious infecti ous agents. If all these necessary measures are taken by a farmer, then the overall production of crops will increase. 25. What are the desirable agronomic characteristics for crop improvements? Ans. The desirable desirable agronom agronomic ic characteristics for crop crop improvements improvements are: are: (i) Tallness and profuse branching in any fodder crop. (ii) Dwarfness in cereals. These desirable agronomic characteristic shelp in increasing crop productivity. 26. What factors may be responsible for losses of grains during storage? Ans. During the storage storage of grains, grains, various various biotic factors factors such as insects, rodents, mites,fungi, mites,fungi, bacteria, bacteria, etc. and various abiotic factors such as inappropriate inappropriate moisture, temperature, temperature, lack l ack of sunlight, blood, etc. are responsible for losses of grains. These factors act on stored grains and result in degradation, poor germinability, germinability, discolouration, etc. 27. What management management practices are common in dairy and poultry farming? Ans. Common Common management management practices in dairy dairy and poultry poultry farming are: are: (i) Proper shelter facilities and their regular cleaning. (ii) Some basic hygienic conditions such as clean water, nutritious food, etc. (iii) Animals are kept in spacious, airy, and ventilated place. (iv) Prevention and cure of diseases at the right time is ensured. ensured. 28.What are the differences between broilers and layers and in their management? Ans. Layersare Layersare meant meant for egg production, production, whereas whereas broilers broilers are meant meant for poultry poultry meat. Nutritional, Nutritional, environmental, environmental, and housing conditions required by broilers are different from those required by egg layers. A broiler chicken, for their proper growth, requires vitamin rich supplementse specially vitamin A and K. Also, their diet includes protein rich food and enough fat. They also require extra care and maintenance to increase their survival rate in comparison comparison to egg layers. 29. How are fish obtained? Ans. Fish can be be obtained by two ways: (i) Capture fishing: It is the process of obtaining fish from natural resources. (ii) Culture fishery: It is the practice of farming fishes. Farming can be done in both freshwater ecosystem
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(which includes river water, pond water) and marine ecosystem 30. Which method is commonly used for improving cattle breeds and why? Ans: Cross breeding breeding between between a two good variety called hybridizat hybridization ion also results results with a new improved improved variety. variety. Another way way of improving the crop is by by introducing introducing a gene that would provide the the desired character characteristic. istic. This results results in genet genetically ically modified crops Short Answer Questions –(3 Marks) Marks) PreviousYears’ PreviousYears’ Questions Questions 1. Distinguish between intercropping and mixed cropping. List any two advantages of intercropping over mixed cropping. [2010 (T-I)] Ans: Mixed cropping cropping is growing growing two or more more crops simultaneously simultaneously on the same same piece of land, land, for example, example, wheat + gram, or wheat + mustard, Inter-cropping is growing two or more crops simultaneously on the same field in a definite pattern. for example, soyabean + maize, or finger millet (bajra) + cowpea (lobia). Intercropping ensures maximum utilisation of the nutrients supplied, and it prevents pests and diseases from spreading to all the plants belonging to one crop in a field. 2. What are the types of food requirements requirements of dairy animals? Why external and internal paras parasites ites live on and in the cattle can be fatal. [2010 (T-I)] Ans: Roughage Roughage and concentrates concentrates are the the types of food food requiremen requirements ts of dairy animals. animals. The external parasites live on the skin and mainly cause skin diseases. The internal parasites like worms, affect stomach and intestine while flukes damage the li ver. 3. Explain that livestock production needs to be improved. Why there is necessity of animal husbandry? [2010 (T-I)] Ans: To fulfil growing growing demand demand for milk, eggs and and meat and and providing self self employment employment livestock production production needs to be be improved. 4. List any three ways by which the insect/pests attack the plants. [2010 (T -I)] Ans: insect pests attack attack the plants in three ways: ways: (i) they cut the root, stem and leaf, (ii) they they suck the cell cell sap from various parts of the plant, and (iii) they bore into stem and f ruits 5. What factors may be responsible for losses of grains during storage? Also mention any two preventive measures to control loss of grains during storage. [2010 (T-I)] Ans: Factors responsible responsible for losses are biotic biotic— — insects, rodents, fungi, mites and bacteria, and abiotic — inappropriate moisture and temperatures in the place of storage. Cleaning of the produce before storage, proper drying of the produce first in sunlight and then in shade, and fumigation are preventive measures to control loss of grains during storage. 6. List any six factors for which variety improvement improvement in crops is done. [2010 (T-I)] Ans: Higher yield, improved quality, Biotic and abiotic resistance, Change in maturity duration, wider adaptability, adaptability, Desirable agronomic characteristics 7. (a) What is composite fish culture system? (b) Mention one merit merit and one demerit demerit of this system. [2010 (T-I)] Ans: The Composite Composite fish culture system system is a technology technology to grow grow both local local and imported imported fish species species in the water water in the paddy field. One problem with such composite fish culture is that many of these fish breed only during monsoon mixed with other species’ One of the advantage is that fish do not compete for food 8. (a) Why would a cattle breeder choose to cross breed a Jersey cow with a Red Sindhi? State two reasons. (b) Why should weeds be constantly removed from cultivated fields? [2010 (T-I)]
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Answer: (a) Jersey Jersey cows are selected for long lactation periods, periods, while while local breeds breeds like Red Sindhi for excellent excellent resistance to diseases. The two can be cross-bred to get animals animals with both the desired qualities. (b) Weeds take up nutrients and reduce the growth of the crop 9. Write four methods of weed control. [2010 (T-I)] Ans: spraying weedicides, mechanical removal, timely , sowing of crops, intercropping and crop rotation also help in weed control 10. Name any three methods of irrigation and briefly describe them. [2010 (T-I)] Ans: (a) drip irrigation: In this this kind of irrigation irrigation , water water is supplied drop drop by drop near the roots roots of the crops crops or plants. plants. They are generally used in the areas where there is a scarcity of water. However, it is very expensive. (b) Sprinkler system: In this system, the water escapes from the revolving nozzles and is sprinkled like rain on the crops. This system is used for sandy soils and uneven land. (c) Surface (c) Surface irrigation : Method to supply water to agricultural lands from well,ri well,river,Dam ver,Dam etc 11. A farmer grows a leguminous crop between two cereal crops. What kind of advantage he gets by such crop rotation? [2011] Ans: Rotation of crops crops helps in saving on nitrogenou nitrogenous s fertilizers, because because leguminous leguminous plants plants grown during during the rotation rotation of crops can fix atmospheric atmospheric nitrogen in the soil with the help of nitrogen fixing bacteria. 12. State three advantages of shorter duration of the crop from sowing to harvesting. [2010 (T-I)] (T- I)] Ans: Short durations durations allow farmers to grow grow multiple rounds rounds of crops crops in a year. Short duration also reduces the cost of crop production. Uniform maturity makes the harvesting process easy and reduces losses during harvesting. 13. List the nutrients supplied by air, water and soil to the plants. [2010 [ 2010 (T-I)] Ans: Nutrients supplied by air are Oxygen and Nitrogen Nutrient supplied by water is Hydrogen Nutrients supplied by soil are iron, manganese, magnesium, molybdenum etc 14. Define manures. What are its three different kinds? State two limitations of manures. [2010 (T-I)] Ans: Manure is an organic organic matter prepared prepared by the decomposition decomposition of animal animal excreta and and plant plant waste. They are : Compost ,vermi-compost and Green manure. Two limitations of manures are: (i) Supplies small quantities of nutrients to the soil (ii) Loses about half the available nitrogen(iii) Releases greenhouse gases 15. What is meant by bee-keeping? Name: (a) the variety commonly used for commercial honey production. (b) the variety having high honey collection capacity. State how pasturage is related to honey production. [2010 (T-I)] Ans: beekeeping is the practice of rearing bee for making honey (a) Indian bee, (b) The Italian bees have high honey collection capacity. Pasturage is the availability of flowers to the bees for nectar and pollen collection. Pasturage Pasturage is related to honey production because it determines the taste of honey and the quantity of honey 16. A farmer observed parthenium plant growing along with wheat crop. What is parthenium ? What should he do to protect his crop? Why? [2010 (T-I)] Ans: Parthenium Parthenium (gajar (gajar ghas) is a kind kind of weed that that competes competes for food, space space and light. Weeds take up nutrients nutrients and and reduce the growth of the crop and need to remove.
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