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CG Board Class 8 Geography Land Soil Water Natural Vegetation and Wildlife Resources
CG Board Class 8 Geography Land Soil Water Natural Vegetation and Wildlife Resources | CG Board Class 8 Geography | Textbook exercises & Notes.
Answer the following questions.
(i) Which are the two main climatic factors responsible for soil formation?
Ans – The two main climatic factors responsible for soil formation are temperature and moisture.
(ii) Write any two reasons for land degradation today.
Ans – Two reasons for land degradation today are deforestation and overuse of chemical fertilizers or pesticides.
(iii) Why is land considered an important resource?
Ans – Land is considered an important resource because it is essential for various purposes such as agriculture, forestry, mining, housing, roads, and industries. It serves as the foundation for human activities and provides the physical space for these activities to take place.
(iv) Name any two steps that government has taken to conserve plants and animals.
Ans – Two steps that the government has taken to conserve plants and animals include the establishment of national parks, wildlife sanctuaries, and biosphere reserves to protect natural habitats, and the enactment of laws and conventions to regulate and prohibit the trade and killing of endangered species.
(v) Suggest three ways to conserve water.
Ans – Three ways to conserve water are:
Water harvesting: Collect rainwater and store it for later use to reduce dependence on groundwater and surface water sources.
Efficient irrigation methods: Use methods like drip irrigation and sprinklers to minimize water wastage in agriculture.
Water pollution control: Treat industrial and agricultural effluents before releasing them into water bodies to prevent water pollution and contamination.
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
(i) The correct answer is (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
(ii) The correct answer is (c) terrace cultivation.
(iii) Which one of the following is NOT in favour of the conservation of nature?
(a) switch off the bulb when not in use
(b) close the tap immediately after using
(c) dispose polypacks after shopping
(iii) The correct answer is (c) dispose polypacks after shopping.
Match the followings :
(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
(e) contour ploughing
Here are the matches:
(i) Land use (c) productive use of land
(ii) Humus (d) organic matter deposited on topsoil
(iii) Rock dams (a) prevent soil erosion
(iv) Biosphere (b) narrow zone of contact between the lithosphere, hydrosphere, and atmosphere
(v) Contour ploughing (e) contour ploughing
State whether the given statement is true or false.If true, write the reasons.
(i) Ganga–Brahmaputra plain of India is an overpopulated region.
Reason – True. The Ganga-Brahmaputra plain of India is considered an overpopulated region due to its high population density, which is a result of fertile land, availability of water resources, and historical settlement patterns.
(ii) Water availability per person in India is declining.
Reason – True. Water availability per person in India is declining due to the increasing population and growing demands for water resources.
(iii) Rows of trees planted in the coastal areas to check the wind movement is called intercropping.
Reason – False. Rows of trees planted in coastal areas to check the wind movement are not called intercropping. This practice is called “shelter belts” or “windbreaks.” Intercropping refers to the cultivation of different crops in the same field simultaneously to maximize land use and crop diversity.
(iv) Human interference and changes of climate can maintain the ecosystem.
Reason – True. Human interference and changes in climate can affect the ecosystem, but maintaining a balanced and healthy ecosystem often requires careful management and conservation efforts.
CG Board Class 8 Geography Chapter 1 Resource Solutions
