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Biotechnology &...

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  • Question 1
    4 / -1

    Bt  toxin gene has been cloned from the bacteria and expressed in plants to provide resistance to insects without the need for insecticides. Examples of such plants are

  • Question 2
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    Though Green Revolution has been a resounding success in terms of agricultural, production, yet it has failed in its overall social objectives because

  • Question 3
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    Read the given statements and select the correct option 

    Statement 1: Ti plasmid obtained from Agrobacterium tumefaciens is effectively used as a vector for gene transfer in plant cells.
    Statement 2: The part of Ti plasmid transferred into the DNA of plant cells is called as T-DNA.

  • Question 4
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    Study the following statements regarding Bt toxins produced by bacterium Bacillus thuringiensis and select the correct one.

  • Question 5
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    Which of the following statements is/are correct with regard to the disadvantages of GM crops?

  • Question 6
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    'Flavr Savr' variety of tomato which remains fresh for a longer period than normal tomato variety

  • Question 7
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    Which of the following statements are correct regarding the process of RNA interference?

    (i) This is used to prevent the infestation of protozoans.
    (ii) It takes place in some eukaryotic and all prokaryotic organisms as a method of cellular defense.
    (iii) The method involves silencing of a specific mRNA due to a complementary dsRNA molecule.
    (iv) It is a novel strategy to produce pest-resistant plants.

  • Question 8
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    Genetic engineering is possible, because

  • Question 9
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    Which of the following genes were introduced in cotton to protect it from cotton bollworms?

  • Question 10
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    'Golden rice' developed through transgene approach is enriched with

  • Question 11
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    All are the biotechnological applications in order to increase food production except

  • Question 12
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    Agrochemical based agriculture includes

  • Question 13
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    Which of the following statements is not correct regarding the genetic modification of corps?

  • Question 14
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    The process of RNA inteference has been used to made tovacco plant resistant to 

  • Question 15
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    Bt corn has been made resistant from corn borer disease by introduction of the gene

  • Question 16
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    Which one of the following is not used as bio-fertiliser?

  • Question 17
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    Read the given statements and select the correct option

    Statement 1: Foods derived from transgenic crops are called as GM foods
    Statement 2: Health and food safety concerns have been raised to ensure the safety of GM foods.

  • Question 18
    4 / -1

    Hirudin is

  • Question 19
    4 / -1

    Main objective of production of herbicide resistant GM crops is to

  • Question 20
    4 / -1

    Nif' gene for nitrogen fixation in cereal crops like wheat jowar etc., is introduced by cloning

  • Question 21
    4 / -1

    First genetically modified plant commercially released in India is

  • Question 22
    4 / -1

    Some of the characteristics of Bt-cotton are:

  • Question 23
    4 / -1

    Study the following statements regarding organic farming and select the correct ones.
    (i) It utilities genetically modified crops like Bt cotton.
    (ii) It uses only naturally produced inputs like compost and biofertilisers.
    (iii) It does not use pesticides and urea.
    (iv) It produces vegetables rich in vitamins and minerals.

  • Question 24
    4 / -1

    The Bt toxin is not toxic to human beings because

  • Question 25
    4 / -1

    Which of the following agricultural challenges cannot be solved with transgenic techniques?

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