Class VIII geography - Chapter 2 ncert solutions | Land, Soil, Water, Natural Vegetation and Wildlife Resources
Class 8(VIII )Geography NCERT Exercise
|Chapter 2 Land, Soil, Water, Natural Vegetation and Wildlife Resources|
1. Answer the following Questions
i) Which are the two main climatic factors responsible for soil formation?
Answer :
The two main climatic factors responsible for soil formation are - Temperature and Rainfall.
ii) Write any two reasons for land degradation today?
Answer:
i) Over Use of chemical fertilizers and
ii) Deforestation are two reasons for land degradation.
iii) Why is land considered an important resources?
Answer:
Land is considered as an important resources because all activities like - Agriculture, Mining, building houses , roads, setting up of Industries we perform on Land only. Land also support animals kingdom and forestry.
iv) Name any two steps that government has taken to conserve plants and animals?
Answer:
National parks, wildlife Sanctuaries, biosphere reserves are made to protect our natural vegetation and wildlife.
Awareness programmes like social forestry and Vanamohatasava should be encouraged at the regional and community level.
V) Suggest three ways to conserve water.
Answer:
Three ways to conserve water are as follow:-
i) The canals used for irrigating field should be properly lined to minimise losses by water seepage.
ii) Rain water harvesting.
III) To reduce the domestic uses of water.
2. Tick the correct answer.
i) Which one of the following is NOT a factor of soil formation?
a) time
b) soil texture
c) organic matter
Answer: (b) soil texture
ii) Which one of the following methods is most appropriate to check soil erosion on steep slopes?
a) shelter belts
b) mulching
c) terrace cultivation
Answer: (c)terrace cultivation
iii) Which one of the following is NOT in favour of the conservation of nature?
a) switch off the blub when not in use
b) close the tap immediately after using
c) dispose Poly packs after shopping
Answer: dispose poly packs after shopping
3. Match the following
(i) Land use | (a) Prevent soil erosion |
(ii) Humus | (b) Narrow zone of contact between the lithosphere, hydrosphere and atmosphere |
(iii) Rock dams | (c) Productive use of land |
(iv) Biosphere | (d) Organic matter deposited on top soil |
Answer:
(i) Land use | (c) Productive use of land |
(ii) Humus | (d) Organic matter deposited on top soil |
(iii) Rock dams | (a) Prevent soil erosion |
(iv) Arable land | (b) Narrow zone of contact between the lithosphere, hydrosphere and atmosphere |
( i- c , ii - d, iii - a, iv - b)
4. State whether the given statement is true or false. If true write the reasons.
i) Ganga- Brahmaputra plain of India is an overpopulated region.
Answer:
Ganga - Brahmaputra Plain of India is an over populated region the statement is true because plain and river Valley areas are suitable land for agriculture.
ii) Water availability per person in India is declining
Answer:
The above statement is true because India's increasing population , rising demands for food and cash crops, increasing urbanisation and rising standard of living are the factors leading to water scarcity. If these trend will go on further then water availability per person will decline.
iii)Rows of trees planted in the coastal areas to check the wind movement is called inter cropping.
Answer:
The above statement is false because - rows of trees are planted to check the wind movement is called Shelter belts.
iv) Human interference and changes of climate can maintain the ecosystem.
Answer:
False because human interference and Climate change cause the loss of natural habitats which can destroy the ecosystem.
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