Soil, Water, Natural Vegetation and Wildlife Resources
Q1. Fill in the blanks.
Three-fourth’s of the earth’s surface is
covered with water.
Plains and river valleys offer suitable
land for agriculture.
Community lands are also called common
and depletion are the major threats to soil as a resource.
Fresh water accounts for only about 2.7
Parent rock determines
colour, texture, chemical properties mineral, content, permeability of the
and rainfall influence rate of weathering and humus.
A dripping tap wastes1200 litres in
Countries located in climatic zones most
susceptible to droughts face great problems of water scarcity. True
Plains and river valleys are the thinly
populated areas of the world. False
Human factors such as population and
technology are also important determinants of land use pattern. True
Forests are broadly classified as evergreen
and deciduous. True
Water is a vital renewable natural resource.
It takes hundreds of years to make just one
centimeter of soil. True
Q3. Which country has the highest percentage of land under
Q4. Which country has the highest percentage of land under cropland?
Q5. Which country has the highest percentage of land under pasture?
Q6. What are the major threats to soil as a resource?
Ans. Soil erosion and depletion are the major threats
to soil as a resource.
Q7. What method of soil conservation is used in coastal and dry
Ans. Shelter belts are used to protect the soil in
coastal and dry regions.
Q8. What percent of fresh water is fit for human use?
Only 1 per cent of freshwater is available and fit for human use.
Q9. What make the soil fertile?
Ans. The right mix of minerals and organic matter make
the soil fertile.
Q10. What affect the rate of humus formation?
Ans. Flora, fauna and micro-organism affect the rate
of humus formation.
Q11. Why is ocean water not fit for human consumption?
Ans. The ocean water is saline. Hence it is not fit
for human consumption.
Q12. What is soil?
Ans. The thin layer of grainy substance covering the
surface of the earth is called soil.
Q13. Which are the two main climatic factors responsible for
Temperature and rainfall are the two main climatic factors responsible for soil
Q14. Which method is most appropriate to check soil erosion on
Terrace farming is the most appropriate method to check soil erosion on steep
Q15. What do you mean by shelter belt?
of trees planted in the coastal areas to check the wind movement is called
Q16. How are forest classified on the basis of latitude?
Ans. Forests are classified as tropical or temperate
based on their location in different latitudes.
Q17. What are the major types of vegetation in the world?
The major vegetation types of the world are grouped as forests, grasslands,
scrubs and tundra.
Q18. How are vultures important to the environment?
Vulture due to its ability to feed on dead livestock is a scavenger and
considered a vital cleanser of the environment.
Q19. What percentage of Earth is covered by land?
Ans. Land covers only about thirty per cent of the
total area of the earth’s surface and all parts of this small percentage are