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    Question

    Consider the following statements and choose the correct statements:

    (A). Sugarcane has kranz anatomy in their leaves

    (B). Maize is a C₄ plant

    (C). Photolysis of water in photosynthesis require Mg ++ ions.

    (D). C₄ path way of photosynthetic CO₂ fixation was discovered by Hatch and Slack.

    Choose the correct answer from the options given below

    A (A), (B) and (D) only. Correct Answer Incorrect Answer
    B (A), (B) and (C) only. Correct Answer Incorrect Answer
    C (A), (B), (C) and (D). Correct Answer Incorrect Answer
    D (B), (C) and (D) only. Correct Answer Incorrect Answer

    Solution

    (A) Sugarcane has kranz anatomy in their leaves: True, sugarcane, a C₄ plant, has kranz anatomy specialized for efficient photosynthesis under high light and temperature. (B) Maize is a C₄ plant: True, maize utilizes the C₄ photosynthetic pathway which is more efficient under high light intensity and temperatures. (C) Photolysis of water requires Mg++ ions: False, photolysis of water requires light and involves enzymes associated with manganese, not magnesium. (D) C₄ pathway of photosynthetic CO₂ fixation was discovered by Hatch and Slack: True, this pathway was identified by Hatch and Slack, explaining a more efficient photosynthesis mechanism.

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