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Natural Resources Test - 17

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Natural Resources Test - 17
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Minerals are ........... in origin.
    Solution
    Minerals are obtained from earth's crust and the layers below  it. Which then enter the biotic world through plants. 
    So, the correct answer is 'Abiogenic'
  • Question 2
    1 / -0
    In the water cycle, the process by which water is returned to the atmosphere in the form of water vapour, is known as:
    Solution
    Evaporation is the process through which water is returned to the atmosphere in the water cycle. In evaporation, the water changes from the liquid state (from water bodies) to a gaseous state (water vapour).
    So, the correct answer is option C.
  • Question 3
    1 / -0
    The circulation of oxygen in various forms through nature is called
    Solution
    The oxygen cycle is the cycle that helps move oxygen through the three main regions of the Earth, the Atmosphere, the Biosphere, and the Lithosphere. The Atmosphere is of course the region of gases that lies above the Earth's surface and it is one of the largest reservoirs of free oxygen on earth.
    The correct option is C.
  • Question 4
    1 / -0
    The atmosphere contains .......... % of oxygen.
    Solution
    The atmosphere contains 21% oxygen. The level is maintained by respiration and photosynthesis. 
    So, the correct answer is option A.

  • Question 5
    1 / -0
    All of these are biotic factors except:
    Solution
    The environment is a complex of many factors which surround an organism. These factors are known as environmental factors or ecological factors which may be either living or biotic and non-living or biotic. 
    Biotic factors include plants, animals, microbes, etc.
    Abiotic factors are the non-living factors, substances, and conditions of the environment which influence the physiology, survival, function, and reproduction of organisms. 
    Hence, trees, mushrooms, squirrels, and bacteria are biotic factors while the soil is an abiotic factor.
    So, the correct answer is 'Soil'.
  • Question 6
    1 / -0
    Which method helps to conserve soil fertility?
    Solution
    Crop rotation is a pattern of growing different types of crops in the same area. This method helps in the replenishment of nutrients by the regular succession over the same field and enhances the health of crops. Hence, it minimizes the amount of pest and increases crop production. Thus, the correct answer is option D.
  • Question 7
    1 / -0
    Water cycles through the biosphere in all of the following processes except:     
    Solution
    A. When the water vapour in the atmosphere condenses and falls in the form of rain, hail, snow, etc., it is called precipitation.
    B. Condensation is the conversion of a gas into liquid when the temperature is lowered down.
    C. Transpiration is the loss of water in vapour form from the surface of leaves through minute pores called stomata.
    D. Decomposition is the process of the breakdown of complex organic materials into simpler ones.
    E. Runoff is the overflow or the flow of excess water over the earth's surface from any water source.
    Hence, water cycles through the biosphere in all of the given processes except decomposition.
    So, the correct answer is 'Decomposition'.
  • Question 8
    1 / -0
    Which of the following is a community of plants and animals which occupies a large geographical area within a particular climate zone?
    Solution
    A biome is a community of plants and animals that have common characteristics for the environment they exist in. They can be found over a range of continents. Biomes are distinct biological communities that have formed in response to a shared physical climate.
  • Question 9
    1 / -0
    The $$CO_{2}$$ content by volume, in the atmospheric air is about
    Solution

    • The carbon dioxide present in the atmosphere is generally the result of respiration by animals during the day and the emissions by various vehicles, industries, and machines. 
    • All these activities account for a total of 0.0314% $$CO_2$$ in the atmospheric air.

    So, the correct answer is '0.0314%'.

  • Question 10
    1 / -0
    UNEP stands for
    Solution

    UNEP stands for United Nations Environment Programme is an agency of United Nations and coordinates its environmental activities, assisting developing countries in implementing environmentally sound policies and practices. 

    So, the correct answer is 'United Nations Environment Programme'.

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