7th Class Science Transportation in Animals and Plants Question Bank Transportation in Plants and Animals

  • question_answer
    The part labelled X in the given diagram helps plants to ___.
    (i) take in oxygen
    (ii) take in water vapour
    (iii) Give out oxygen
    (iv) give out water vapour

    A)  (i) and (ii) only

    B)  (i) and (iii) only

    C)  (ii) and (iii) only

    D)  (i), (iii) and (iv) only

    Correct Answer: D

    Solution :

    The part labelled X in the diagram is stomata through which leaves take in carbon dioxide and give out oxygen during photosynthesis, take in oxygen during respiration and give out water vapour during transpiration.

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