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Biology Test 20...

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  • Question 1
    4 / -1

    It is observed that all adult individuals of a population do not have equal chances of mating, because only some males with better phenotyes are prefferred by females. This phenomenon is called

  • Question 2
    4 / -1

    Constancy in population size is due to :-

  • Question 3
    4 / -1

    The fitness, according Darwin, refers ultimately and only to ---A--- hence, those who are better fit in an environment leave ---B--- than others. Choose correct option for A and B.

  • Question 4
    4 / -1

    Select incorrect statements - 

    (A) Branching descent and natural selection are two key concepts of Darwinian theory of evolution

    (B) Natural selection is based on certain observations which are not factual 

    (C) Any population has built in variation in characterstics.

    (D) Adaptive ability is inherited. It has no genetic basis. 

  • Question 5
    4 / -1

    Directions For Questions

    Read the following four statement A-D :-

    (A) According to Darwin fitness refers only and ultimately to reproductive fitness

    (B) Alfred wallace, was a naturalist who worked in Malay Archipelago

    (C) Darwin started his sea voyage by HMS beagle ship

    (D) De vries gave theory of use and disuse of organs.

    ...view full instructions

    How many of the above statements are correct ?

  • Question 6
    4 / -1

     

    The diversity in the type of beaks of finches adapted to different feeding habits on the Galapagos Islands, as observed by Darwin, provides evidence for :

  • Question 7
    4 / -1

    The process of evolution of different species in a given geographical area starting from a point and radiating to other areas of geography is called as:

  • Question 8
    4 / -1

    The figure given below is an example of :

  • Question 9
    4 / -1

    According to mode of nutrition the original ancestors of Darwin finches were :-

  • Question 10
    4 / -1

    The process by which organisms with different evolutionary history evolve similar phenotypic adaptation in response to a common environmental challenge, is called :

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