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Biology Test 36...

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  • Question 1
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  • Question 2
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    Directions For Questions

    Tropical regions show greatest level of species richness because

    A. Tropical latitudes have remained relatively undisturbed for millions of years, hence more time was available for species diversification.

    B. Tropical environments are more seasonal.

    C. More solar energy is available in tropics.

    D. Constant environments promote niche specialization.

    E. Tropical environments are constant and predictable.

    ...view full instructions

    Choose the correct answer from the options given below.

  • Question 3
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    Primitive atmosphere was made up of the mixture of :

  • Question 4
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    Read the given statements and select the correct option.

    Statement 1: Pioneer community is the stable and final biotic community of an ecological succession.

    Statement 2: Pioneer community has maximum diversity and niche specialisation.

  • Question 5
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    Animals undergo an inactive stage during the winter known as:

  • Question 6
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    Which of the following statements about predation is correct?

  • Question 7
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    Directions For Questions

    Given figure represents a pyramid of biomass in an aquatic ecosystem

    ...view full instructions

    Identify A and B and select the correct answer.

    (i) A is the crop which supports and B is the crop which is supported.

    (ii) A is the crop which is supported and B is the crop which supports.

    (iii) A is phytoplanktons and B is zooplanktons.

    (iv) A is zooplanktons and B is phytoplanktons.

  • Question 8
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    Function of thyrocalcitonin :-

  • Question 9
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    The Schwann sheath is :-

  • Question 10
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    In an open ocean, the biomass of primary producers (microscopic algae) is often lower than the biomass of higher trophic levels (zooplanktons and fish), as illustrated below by an inverted pyramid of biomass. How can there be enough food in an open ocean to support the higher trophic levels?

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