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Ecosystem Test - 38

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Ecosystem Test - 38
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Weekly Quiz Competition
  • Question 1
    1 / -0
    In the earths crust carbon is found in the form of
    Solution
    In the Earths crust only 0.02% Carbon is found in the form of minerals like carbonates, hydrogen carbonates, coal and petroleum.
  • Question 2
    1 / -0
    Which gas is utilised in combustion process ?
    Solution
    During the combustion process, oxygen is utilized. As Oxygen is required for the combustion to occur.
  • Question 3
    1 / -0
    Biogeochemical cycle involves .......... factors.
    Solution
    Biogeochemical cycle involves biological, geological and chemical factors. The circulation of chemical nutrients like carbon, oxygen, nitrogen, phosphorus, calcium, and water, etc. between biotic and abiotic components of the biosphere is known as a biogeochemical cycle.
    So, the correct option is option D.
  • Question 4
    1 / -0
    Eco-efficiency helps in achieving improved _______
    Solution
    Eco-Efficiency has been proposed as one of the main tools to promote a transformation from unsustainable development to one of sustainable development. It is based on the concept of creating more goods and services while using fewer resources and creating less waste and pollution.
  • Question 5
    1 / -0
    ________ is required to maintain the balance in nature.
    Solution
    The path through which a nutrient travels as it moves from the air, water or soil into the bodies of living organisms and back to the air, water or soil is called a biogeochemical cycle. It is one of the requirements to maintain the balance in nature.
  • Question 6
    1 / -0
    The energy pyramid is always _________-.
    Solution
    The flow of energy is always unidirectional. The energy passes from primary producers to primary consumers. From primary consumer the energy passed to secondary consumers and then to teritary consumers. Thus the energy pyramid is always upright.
  • Question 7
    1 / -0
    Biogeochemical cycles
    Solution
    Breaking apart the word biogeochemical into pieces. The first part of the word, bio, involves biological organisms, like bacteria, plants, and animals. The next part of the word, geo, involves geological processes, like the weathering of rocks. The last part of the word indicates chemical processes, such as the formation of molecules. Thus a biogeochemical cycle or substance turnover or cycling of substances is a pathway by which a chemical substance moves through both biotic (biosphere) and abiotic (lithosphere, atmosphere, and hydrosphere) compartments of Earth. A cycle is a series of change which comes back to the starting point and which can be repeated.
    So, the correct answer is 'Describe the movement of water and other materials throughout the abiotic and biotic environment'.
  • Question 8
    1 / -0
    __________ is concerned with creating more value with less impact.
    Solution
    Eco-efficiency is achieved by the delivery of competitively priced goods and services that satisfy human needs and bring quality life while progressively reducing ecological impacts and resource intensity throughout the life-cycle to a level at least in line with the earths estimated carrying capacity.
  • Question 9
    1 / -0
    The atomic no. of carbon is ________
    Solution
    The atomic no. of carbon is 6, The atomic no. of Boron is 5, The atomic no. of Magnesium is 12, The atomic no. of Silicon is 14.
  • Question 10
    1 / -0
    In biogeochemical cycle, the chemical cycle moves through 
    Solution
    A biogeochemical cycle is the cycle which involves the exchange minerals between biotic and abiotic materials. Biotic components include biosphere and abiotic components include lithosphere, atmosphere, and hydrosphere.
    So, the correct answer is option C.
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