BHU PMT BHU PMT (Mains) Solved Paper-2006

  • question_answer

    Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:

    Correctly matched pairs are : (1) Allopatric species?separated by distance barrier (2) Darwin's finches?unique to Galapagos island (3) Coacervates?aggregates of large complex organic compounds bound by a membrane (4) Species are not?Lamarckism immutable

    A)  1, 2 and 3 are correct

    B)  1 and 2 are correct

    C)  1,2 and 4 are correct

    D)  1 and 3 are correct

    Correct Answer: A

    Solution :

                     When a population, formerly continuous in range, splits into two or more geographically isolated populations and form new species, this species is called allopatric species. Darwin during his voyage around the world studied the fauna and flora of Galapagos islands. Darwin studied 20 related varieties of the bird belonging to family geospizidae different in shape and size of beak. These birds are now called Darwin's finches. The large organic molecules which were synthesized abiotically on primitive earth came together and due to intennolecular attraction, they formed large colloidal aggregate. Such colloidal bodies were named coacervates by Oparin.


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