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Discussion :: Biology

  1. In plants, exchange of gases takes place through

  2. A.

     Stomata

    B.

     Palisade tissue

    C.

     Spongy tissue

    D.

     Mid rib

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    Answer : Option A

    Explanation :

    The exchange of oxygen and carbon dioxide in the leaf (as well as the loss of water vapour in transpiration) occurs through pores called stomata (singular = stoma). Normally stomata open when the light strikes the leaf in the morning and close during the night.


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