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NEET Biology Mineral Nutrition In Plants Question Bank Critical Thinking

  • question_answer
    On the basis of symptoms of chlorosis in leaves, a student inferred that this was due to the deficiency of nitrogen. This inference could be correct only if yellowing of leaves appeared first in                                          [AIIMS 1980]

    A) Young leaves

    B) Old leaves

    C) Young leaves followed by old leaves

    D) Old leaves followed by young leaves

    Correct Answer: B

    Solution :

    Chlorosis is the main symptom of nitrogen deficiency. As a result, the leaves gradually become pale or yellow. These symptoms first appear in old leaves and later in young leaves.


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