UPSC General Studies Sample Paper General Studies Sample Paper-4

  • question_answer
    Consider the following statements with reference to Tissue Culture.
    1. Micropropagation under tissue culture refers to the transfer of desired genes into plant saplings to produce identical plants.
    2. Explants refer to any part of a plant taken out and grown in a test tube, under sterile conditions in special nutrient media.
    3. Capacity to generate a whole plant from any cell/explant is called totipotency.
    4. Each of the plants produced by tissue culture will be genetically identical to the original plant from which they were grown,
    Which of the statements given above are correct?

    A)  1, 2 and 3                    

    B)  2, 3 and 4

    C)  1 and 4           

    D) (d) All of these

    Correct Answer: B

    Solution :

    [b] The capacity to generate a whole plant from any cell/explant is called totipotency. The nutrient medium must provide a carbon source such as sucrose and also inorganic salts, vitamins, amino acids and growth regulators like auxins, cytokinins etc. By application of these methods, it is possible to achieve propagation of a large number of plants in very short durations. This method of producing thousands of plants through tissue culture is called micropropagation.


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