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Ecosystem Test - 4

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Ecosystem Test - 4
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Weekly Quiz Competition
  • Question 1
    1 / -0

    Transducers is the term used for 

    Solution

    Transducers are those organisms that convert one form of energy to another form. Green plants converts solar energy into chemical energy in foods by the process of photosynthesis.

  • Question 2
    1 / -0

    Which of the following is not a layer found in lakes?

    Solution

    Lentic zone is found in flowing terrestrial water such as rivers and streams. Lake stratification have limnetic, littoral and profundal zone only.

  • Question 3
    1 / -0

    Dead parts of plants and animals that fall on the earth surface constitute

    Solution

    Dead parts of plants and animals that fall on earth surface constitute litter. These litter get decomposed due to action of microbes to form humus and release nutrients in soil.

  • Question 4
    1 / -0

    Among desert plants, which of the following will become a limiting for primary production

    Solution

    Primary productivity is of plants depends upon availability of water, sunlight, chlorophyll, carbon dioxide etc. but in desert plants water is the main limiting factor as very less amount of water is available to plants in deserts.

  • Question 5
    1 / -0

    Which of the following may cause algal blooms in the aquatic system:

    Solution

    Algal bloom is rapid increase in population of algae is a water system. This is caused due to excess of nutrients like phosphorus and nitrogen in the water bodies.

  • Question 6
    1 / -0

    Sparrow is 

    Solution

    Sparrow feeds on fruits as well insects. Herbivores or plant eaters are primary consumer and carnivores that feed on herbivores are secondary consumer. So, Sparrow occupy both primary and secondary trophic levels.

  • Question 7
    1 / -0

    The first order consumers are called:

    Solution

    Plants and algae make their own food and are called primary producers. Herbivores eat plants and are called primary consumers.

  • Question 8
    1 / -0

    We can save those water reservoirs which are useful for irrigation, by

    Solution

    We can save water reservoirs which are useful for irrigation by checking biotic succession. Biotic succession leads to silt formation at bottom that reduce the capacity of water reservoirs.

  • Question 9
    1 / -0

    The metabolic process which causes a reduction in gross primary production:

    Solution

    Respiration causes a reduction in gross primary productivity of an ecosystem. Gross primary productivity – Respiration = Net primary productivity.

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