📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!


    ⚡ Azaadi sale - Celebrate Independence Day with Flat 55% Off On all courses! 13 to 17 Aug ⚡ Enroll Now

    Question

    Given below are two statements Statement I: C₃

     plants are more efficient than C₄  plants in terms of carbon dioxide fixation Statement II: C₄  plants are less water efficient and consume more amount of water then C₃  plans for same amount of CO₂  fixed. In light of the above statements, choose the correct answer from the options given below
    A Both Statement I and Statement II are true Correct Answer Incorrect Answer
    B Both Statement I and Statement II are false Correct Answer Incorrect Answer
    C Statement I is true but Statement II is false Correct Answer Incorrect Answer
    D Statement I is false but Statement II is true Correct Answer Incorrect Answer

    Solution

    C₄  plants are actually more efficient than C₃  plants in terms of carbon dioxide fixation. C₄  plants have adapted a more efficient carbon fixation pathway that allows them to minimize photorespiration and increase photosynthetic efficiency, particularly in high-temperature and high-light conditions. C₄  plant loses half as much as water as a C₃  plant as C₄  plants need not to open their stomata for long to take in carbon dioxide due to high efficiency of the C₄  pathway and this reduces water loss due to transpiration. The water loss per gram of biomass produced with C₃  cycle is high (450-950). However, the water loss per gram of biomass produced with C₄  cycle is low (250-350)

    Practice Next
    More Important Agriculture Q Questions

    Relevant for Exams:

    ask-question

    Not sure which exam is best for you Talk to our expert

    Get My Free Call