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    Question

    Kindly Study the following questions carefully and

    choose the right answer. The exchange of gases takes place in the leaves through these pores for the purpose of photosynthesis. These pores are called-
    A Guard Cells Correct Answer Incorrect Answer
    B Stomata Correct Answer Incorrect Answer
    C Chloroplast Correct Answer Incorrect Answer
    D None of the above Correct Answer Incorrect Answer

    Solution

    Stomata are tiny pores present on the surface of the leaves via which exchange of gases takes place in the leaves for the purpose of photosynthesis. However, exchange of gases also occurs across the surface of stems, roots and leaves as well. Since large amounts of water can also be lost through these stomata, the plant closes these pores when it does not need carbon dioxide for photosynthesis. Hence, option B is correct.

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