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CBSE Class 12 Biology Solved Model Paper (Set - 1)

May 25, 2015 17:31 IST

    The experts at Team Jagran Josh have framed the Model Test Paper for Biology subject which strictly follows the Board pattern of CBSE Class 12 for the year 2016. The Model Test Paper is extremely beneficial for the Class 12 Students appearing for their respective examinations in 2016.

    To Get the Complete Solved Model Paper, Click Here

    A few Questions from this Model Test Paper are given below:

    Section A

    Q. How is flavr savr tomatoes different from normal tomatoes?

    Answer Flavr savr tomatoes was expected that ripe fruit would remain firm for a longer duration and perhaps allow its transportation to market after vine-ripening, Flavr savr tomatoes are of higher nutritive value as compared to naturally grown tomato.

    Q. Name the type of chemical bond formed between two nucleotide units of a DNA molecule?

    Answer Hydrogen bond is found between two nucleotide units of a DNA molecule.

    Q. Why do we call restriction enzymes as molecular scissors?

    Answer Molecular scissors or restriction enzymes, they are responsible for cutting DNA at specific location, so that strands of DNA can be cut and joined together. e.g Ecori I, EcoR II, Bham.

    Q. How a Water Hyacinth plant becomes so very harmful to the pond ecosystem?

    Answer Scientific name of Water hyacinth is Eichhornia crassipes and is commonly known as ‘ Terror of Bengal’. They grow very rapidly and leads to eutropification of the water body and leads to imbalance of water ecosystem.

    Q. Write the source of Taq polymerase enzyme.

    Answer Taq polymerase enzyme is isolated from a bacterium, Thermus aquaticus. These enzymes are found in extreme heat temperature.

    To Get the Complete Solved Model Paper, Click Here

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