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5th Class Science Plants Question Bank Plants

  • question_answer
    Study the set-ups shown below. Each test tube contains few bean seeds on the cotton wool. Farheen wants to carry out an experiment to show that warmth of the light is needed for germination to take place. Which of the two set-ups should she use?

    A)  P and W                      

    B)  R and W

    C)  Q and W

    D)  W and X

    Correct Answer: A

    Solution :

    Seeds require water, air and sunlight to germinate. To test the essentiality of light, those two set-ups should be chosen where each gets air and water, but one gets light and the other does not. For a fair experiment, all the conditions, except availability of light should be identical. Here P (without light) and W (with light) are two such set-ups and should be chosen by Farheen.


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