class 9th biology chapter 15
Answers
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Answer:
Revision Notes on Improvement in Food Resources
All living organisms need food because:
It provides carbohydrates, fats vitamins and minerals
It allows development of the organisms
It is needed to gain energy for everyday tasks
Main sources of food:
Plants – obtained from agriculture
Animals – obtained from animal husbandry
The efficiency of crops and livestock is required in India because:
The population of India is growing at a faster rate hence more amount of food is required to meet the rising demand.
The agricultural land is limited as compared to the growing population.
Efforts made to meet the increase in food demands
Green Revolution – The introduction of modern technology and equipment, usage of fertilizers and high-quality seeds
White Revolution – Increasing the growth of milk production by introducing dairy development programs
The introduction of these revolutions has led to an increased use of natural resources hence now sustainable methods of increasing crops and livestock efficiency are also required.
Improvement in Crop Yields
Different types of crops and their Nutritional Value
Crop Examples Value
Cereals
Wheat, rice, maize, millets, sorghum
Carbohydrates
Pulses
Gram, black gram, green gram, pigeon pea, lentil
Proteins
Oilseeds
Soybean, groundnut, sesame, castor, mustard, sunflower
Fats
Vegetables, Spices and Fruits
Carrot, Cinnamon, orange, spinach
Minerals, vitamins and small amounts of Carbohydrates, fats and proteins
Fodder crops
Berseem, oats, sudan grass
Food for Livestock
Explanation:
Chapter-15
Improvement in food resources
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