Q1. 90% of the total world population resides in .................. of the land area.

(a) 10%
(b) 20%
(c) 30%
(d) 40%

Q2. The thin layer of grainy substance covering the surface of the earth is called ..................
(a) Soil
(b) Land
(c) Minerals
(d) Humus

Q3. The breaking up of rocks is known as ..................
(a) Erosion
(b) Reclamation
(c) Degradation
(d) Weathering

Q4. .................. is a process in which heavy rains wash away the fertile part of the soil.
(a) Cultivating
(b) Mulching
(c) Leaching
(d) Conservation

Q5. Out of the total fresh water available, nearly .................. is in the form of "ICE" and is found in glaciers in Antarctica, Greenland, mountain regions, etc.
(a) 1%
(b) 2%
(c) 3%
(d) 4%

Q6. .................. is the decline in the productive capacity of land for some time or permanently.
(a) Land Reclamation
(b) Land Degradation
(c) Land use
(d) Land Profile

Q7. Natural Vegetation and wildlife exist only in the narrow zone called ..................
(a) Lithosphere
(b) Hydrosphere
(c) Atmosphere
(d) Biosphere

Q8. Species of some animals are on the verge of extinction as their population has decreased considerably. Such species are known as ..................
(a) Endangered Species
(b) Extinct Species
(c) Dying Species
(d) Dead Species

Q9. Sliding of huge debris, rocks and other material down the slope is know as ..................
(a) Volcanic Eruptions
(b) Landslides
(c) Earthquakes
(d) Tsunami

Q10. Which factor is not responsible for the formation of soil?
(a) Time
(b) Organisms
(c) Technology
(d) Relief

Q11. .................. of the earth's surface is covered with water.
(a) One-Fourth
(b) Two-Fourth
(c) Three-Fourth
(d) Fourth-Fourth

Q12. Trees in these .................. shed their leaves in a particular season in order to conserve loss of moisture through transpiration: (select the incorrect one)
(a) Evergreen Forests
(b) Tundra
(c) Deforestation
(d) Deciduous Forests

Q13. Species of plants and animals that do not exist now but existed in the past are called ..................
(a) Endangered Species
(b) Extinct Species
(c) Dying Species
(d) Dead Species

Q14. .................. soil is derived from the weathering of the igneous and metamorphic rocks.
(a) Red Soil
(b) Black Soil
(c) Laterite Soil
(d) Mountain Soil

Q15. .................. irrigation can be used in dry regions, where evaporation is very high.
(a) Sprinklers
(b) Bucket
(c) Drip
(d) Save Water

Q16. A natural area designated to protect the ecological integrity of one or more ecosystems for present and future generations is known as ..................
(a) Wildlife Sanctuaries
(b) Bioreserves
(c) Botanical Gardens
(d) National Parks

Q17. In the biosphere living beings are inter-related and interdependent on each other for survival. This life supporting system is known as the .................
(a) Interdependence
(b) Ecology
(c) Ecosystem
(d) Food Circle

Q18. It is the uppermost layer, Rich in humus & minerals and Consists of Sand, Silt & Clay.
(a) Sub Soil
(b) Top Soil
(c) Alluvial Soil
(d) Black Soil

Q19. The fresh water is continuously being renewed and recharged through the .................
(a) Hydrological Cycle
(b) Oxygen Cycle
(c) Rock Cycle
(d) Renewable Cycle

Q20. In the coastal and dry regions, rows of trees are planted to check the wind movement to protect soil cover, this process is known as .................
(a) Strip Cropping
(b) Contour Barriers
(c) Terrace Cultivation
(d) Shelter Belts

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