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Evolution Test - 1

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Evolution Test - 1
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Weekly Quiz Competition
  • Question 1
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    All the living organisms on the earth constitute the

    Solution

    All the living organisms on the earth constitute the biosphere.The biosphere is the global sum of all ecosystems.

     

  • Question 2
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    A link between the living and non-living is provided by

    Solution

    A link between the living and non-living is provided by viruses.A virus is a small infectious agent that replicates only inside the living cells of other organisms. Viruses can infect all types of life forms, from animals and plants to microorganisms, including bacteria and archaea.

     

  • Question 3
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    The ultimate source of organic variation is

    Solution

    The ultimate source of organic variation is mutation.A mutation is a permanent change of the nucleotide sequence of the genome of an organism, virus, or extrachromosomal DNA or other genetic elements.

     

  • Question 4
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    Who gave the theory of spontaneous generation?

    Solution

    The theory of spontaneous generation is given by Van Helmonth.

     

  • Question 5
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    Why can life not originate from inorganic compounds at present?

    Solution

    Because of high amount of oxygen in the atmosphere, life cannot originate from inorganic compounds at present.

     

  • Question 6
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    Which of the following is a set of homologous organs?

    Solution

    Among the given options, hind limbs of birds and reptiles is a set of homologous organs.

     

  • Question 7
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    Which organs are represented by hands of man, wings of bat and flippers of seal?

    Solution

    Hands of man, wings of bat and flippers of seal are homologous organs. These are similar in morphology and anatomy but different in functions.

     

  • Question 8
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    Which of the following is not a vestigial organ in man?

    Solution

    Vermiform appendix, plica semilunaris and ear muscles are vestigial organs in humans.

     

  • Question 9
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    Which of the following is a vestigial organ of python?

    Solution

    Hind limbs of python are vestigial in nature.

     

  • Question 10
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    Which of the following examples best explains 'atavism'?

    Solution

    An atavism is an evolutionary throwback, such as traits reappearing which had disappeared generations before. Among the given options, atavism is best explained by babies born with vestigial tail.

     

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