Evolution (Zoology)

Evolution (Zoology)

Easy Questions

Advanced Zoology

Animal Kingdom
Structural Organisation in Animals
Digestion and Absorption
Breathing and Exchange of Gases
Body Fluids and Circulation
Excretory Products and their Elimination
Locomotion and Movement
Neural Control and Coordination
Chemical Coordination and Integration
Human Reproduction
Human Health and Disease
Biotechnology Principles and Processes
Biomolecules (Zoology)
Evolution (Zoology)
Biotechnology and its Applications
Reproductive Health
  1. Which one of the following are analogous structures?








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    Analogous organs are those that perform similar functions but have entirely different embryonic origins.

    Correct Option: B

    Analogous organs are those that perform similar functions but have entirely different embryonic origins.

  1. Forelimbs of cat, lizard used in walking; forelimbs of whale used in swimming and forelimbs of bats used in flying are an example of:








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    Organs which have a common fundamental anatomical plan and similar embryonic origin whatever varied functions they may perform are regarded as homologous organs. For examples the flippers of a whale, a bats wing, fore-limb of a horse, a bird’s wing and forelimbs of human are structurally as well as functionally different.

    Correct Option: C

    Organs which have a common fundamental anatomical plan and similar embryonic origin whatever varied functions they may perform are regarded as homologous organs. For examples the flippers of a whale, a bats wing, fore-limb of a horse, a bird’s wing and forelimbs of human are structurally as well as functionally different.

  1. Analogous structures are a result of








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    Analogous structures are those that have the same function, but they are not derived from a common ancestor and have undergone different patterns of development i.e., Convergent evolution which is natural selection that favors the same type of structure in different ancestors.

    Correct Option: B

    Analogous structures are those that have the same function, but they are not derived from a common ancestor and have undergone different patterns of development i.e., Convergent evolution which is natural selection that favors the same type of structure in different ancestors.

  1. Following are the two statements regarding the origin of life
    (a) The earliest organisms that appeared on the earth were non-green and presumably anaerobes.
    (b) The first autotrophic organisms were the chemoautotrophs that never released oxygen.
    Of the above statements which one of the following options is correct?








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    Both statements are correct because primitive atmosphere was reducing and chlorophyll appeared later on. Chemoautotrophs were the first autotrophic organisms unable to perform photolysis of water and never released oxygen.

    Correct Option: C

    Both statements are correct because primitive atmosphere was reducing and chlorophyll appeared later on. Chemoautotrophs were the first autotrophic organisms unable to perform photolysis of water and never released oxygen.

  1. Which of the following structures is homologus to the wing of a bird?








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    Wings of a bird and flippers of a whale are modified forelimbs.

    Correct Option: D

    Wings of a bird and flippers of a whale are modified forelimbs.