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Biology Test 52...

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  • Question 1
    4 / -1

    The scientist working in botanical garden is known as :-

  • Question 2
    4 / -1

    If Meselson and Stahl's experiment is continued for four generations in bacteria, the ratio of 15N/15N : 15N/14N : 14N/14N containing DNA in the fourth generation would be :-

  • Question 3
    4 / -1

    Porocytes are the special cells for the passage of :-

  • Question 4
    4 / -1

    In the process of organic evolution, which of the following appeared for the first time in pteridophytes :-

  • Question 5
    4 / -1

    All genes located on the same chromosome:-

  • Question 6
    4 / -1

    In the Inheritance of flower colours in dog flower plant, the F1 had a phenotype that :-

  • Question 7
    4 / -1

    (A) Metal ions are co-factor which form coordination bonds with side chains at the active site and at the same time form one or more coordination bonds with the substrate. 

    (B) Co-enzymes are organic compounds and their association with the apoenzyme is permanent.

  • Question 8
    4 / -1

    For the completion of fertilization which sequence of layers (outer to inner) are crossed by sperm ?

  • Question 9
    4 / -1

    In cockroach heart rate is controlled by :

  • Question 10
    4 / -1

    Berry fruit is found in :-

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