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Organisms and Populations Test - 71

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Organisms and Populations Test - 71
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Which ecosystem is important in purifying air, recycling water and controling climate?
  • Question 2
    1 / -0
    DMS' stands for ______________.
  • Question 3
    1 / -0
    Due to complexities of biosphere, it is divided into smaller units called
  • Question 4
    1 / -0
    The restricted distribution of the species in a small area is called 
    Solution
    The restricted distribution or presence of a particular species in a certain specific area only is called endemism.
    Example, Polar bear, Kiwi etc
    So, the correct answer is 'Endemism'
  • Question 5
    1 / -0
    What will happen to a well growing herbaceous plant in the forest if it is transplanted outside the forest in a park? 
    Solution
    It may not survive because of change in its micro climate like the soil type, micro-organisms present in the zone surrounding its roots, the tree canopies that create certain micro environmental conditions along with other plants growing in the vicinity.
    So, the correct answer is 'It may not survive because of change in its micro climate'
  • Question 6
    1 / -0
    Two organisms are good friends and live together. One provides shelter, water, and nutrients while the other prepares and provides food. Such an association of organisms is termed as
    Solution
    When two organisms (such as fungus and algae) live as one and also help each other to survive, then this association is termed as symbiosis.
    The correct answer is (d).
  • Question 7
    1 / -0
    Amensalism is an association between two species where:
    Solution
    One species is harmed and other is unaffected, example shading of a smaller plant by a taller tree with a larger canopy. The small tree is deprived of light hence harmed while the tree is unaffected.
    So, the correct answer is 'One species is harmed and other is unaffected'
  • Question 8
    1 / -0
    What are the abiotic factors in this image?

    Solution
    In this picture, sunlight is visible in the background. Light is a non-living or abiotic component of an ecosystem. It has a prominent effect on living or biotic components of an ecosystem. Light is a form of energy. The main source of light or energy for the living organism is the sun, which is trapped by producers and all the other organisms either directly or indirectly. 
    Hence, the correct answer is option A.
  • Question 9
    1 / -0
    Sometimes parasites themselves are parasitised by other organisms, such parasites are known as 
    Solution
    • Symbionts are organisms where two of them live in symbiosis with one another.
    • Endoparasites are parasites, such as tapeworm, that lives inside the host.
    • Ectoparasites are parasites, such as flea, that lives on the outside of the host.
    • Hyperparasites are parasites whose host is also a parasite. This form of parasitism is especially common among entomophagous parasites.

    Thus, the correct answer is option D.
  • Question 10
    1 / -0
    An association between two individuals of populations where both are benefitted and where neither can survive without the other is

    Solution

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