DAV Class 8 Social Science Solution Chapter 5 Agriculture
DAV School Books Class 8 Social Science Solution Chapter 5 Agriculture all Question Answer. DAV Class 8 5th Chapter Agriculture full Chapter explanation by expert teacher.
DAV School Books Class 8 Social Science Solution Chapter 5 Agriculture:
A.) Tick the correct option –
1.) d, 2.) d, 3.) a, 4.) C, 5.) C
D.) Answer the following questions in brief –
1.) Early human beings used to collect food by gathering and hunting. It was becoming a difficult work for them day by day. So they realised the importance of river for agricultural production and started to setup civilization along side the river.
Cultivating land in a wider range ,such as fishing, raising crops, rearing livestock, forestry are broadly called agriculture.
2.) Importance of agriculture –
i)it’s a major source of livelihood for most of the population of the world.
ii)along with supplying food to the people agricultural also creates market for tractors, harvesters, fertilizers etc.
iii)It encourages international trades and strengthen global relationship.
3.) Three techniques to increase the production of crops are-
i)HYV Seeds- discovery of high yielding variety of seeds has increased the production of crops.
ii)Size of land can increase the production of crops.Large size of land can I’ve the chance for more cultivation.
iii) Availability of skilled labour can Increase the production of crops.
4.) Rice cultivation-
Soil-Alluvial ,loamy, chlaye soil Temperature- 24°c or above Rainfall-above 100cm. Wheat Cultivation- Soil-Loamy soil.
Temperature- at the time of sowing 10-15°c and at the time of harvesting 20-25°c temperature needed.
Rainfall-without frost it needs 75-100 cm rainfall.
5.) Migration of people from one place to another place in search of fodder for their animals is called nomadic herding.
Central and Western Asia, East and South West Africa and northern Eurasia are the place for nomadic harvesting.
E.) Answer the following questions –
1.) Difference between Farm agricultural in USA and India-
i.) In USA we can find large size of farm and in India we can find comparatively small land holdings.
ii.) All labors are skilled in USA comparing to India.
iii.) In USA we find extensive use of modern technology than India.
Iv.) In USA we find high capital investment but in India the investment rate is low.
V.) Storage facilities are larger than Indian storage facilities.
2.) Advantages of using biotechnology for agricultural development-
i.) high yielding crops can be produced.
ii.)crop produced for the use of biotechnology are more colorful, different flavoured and have more nutritious value
iii.) crops used by the use of biotechnology are genetically modified and help to protect our environment.
iv.) it has helped agricultural to uplift itself value technically. V)after using this use of pesticides has been deducted .
3.) The physical factors are-
i.) The river basins,deltas and plain areas are more suitable for agricultural development. Here we can get cheap labor and reach market for the high density of population.
ii.) Different crops need different kind of climatic factors.A particular kind of temperature and rainfall is needed for a particular kind of crop.
iii.) variation of crops need different kind of soil. Fertility of soil depends upon rich minerals and organic matters.
4.) Subsistence agriculture is a small scale type of agriculture and use for personal or community usage. This kind of agriculture can be seen in under developed or in developing countries. Nomadic farming, shifting agricultural and intense subsistence agriculture are the three types of it
Commercial agricultural is a large scale agricultural and use for market profit. Market value of the crops are very high . Plantation farming,extensive agricultural, dairy farming and livestock agricultural are the four types of this kind of agriculture.
5.) Size of land holdings, labour and capital are the economic factors of agriculture.
Size of land holdings –big land can cultivate more crops and useful for the large scale production. Agricultural pattern and unit of yielding crops are dependent on the size of a farm
- Capital- For the usage of modern technology a huge capital is needed . Without capital nothing can be possible in a smooth manners.
- Labour-though the existence of high technology machines man power is the ultimate power for agricultural development. In the period of sowing and harvesting agricultural needs extensive supply of labours. In India people of Punjab are worked as migrated lobout.
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