Life Processes

  • Question 41
    CBSEENSC10011741

    From where do the aquatic plants get CO2 to manufacture food?

    Solution
    Aquatic plants utilize the carbon dioxide dissolved in water.
    Question 42
    CBSEENSC10011742

    Can plant photosynthesise in artificial light also?

    Solution
    Yes, if light intensity is enough.
    Question 43
    CBSEENSC10011743

    In the experiment to prove that starch is produced during photosynthesis why do you boil the leaf in alcohol?

    Solution
    We boil the leaf in alcohol to remove all the chlorophyll from the leaf, so that the plant cannot produce more food due to the lack of chlorophyl.
    Question 44
    CBSEENSC10011744

    How do you test the presence of starch?

    Solution
    Starch can be tested by adding iodine. The colour will change to blue black which proves the presence of starch.

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