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  • ICAR and TNAU E-Course Summarized

    Summarized Notes
  • Which type of plant exhibits Kranz anatomy?

    Question: Which type of plant exhibits Kranz anatomy?

    Options:

    C3 plants
    C4 plants
    CAM plants
    All of the above

    ✅Explanation:
    Kranz anatomy is a specialized adaptation found in certain plants, particularly C4 plants. It involves a distinct arrangement of vascular bundles in the leaves, with mesophyll cells (photosynthetic cells) surrounding bundle sheath cells. This arrangement helps C4 plants efficiently fix carbon dioxide for photosynthesis under conditions where CO2 levels are low.

    🛑 Additional Information:
    -Kranz anatomy is a type of leaf structure where the tissue equivalent to spongy mesophyll cells is clustered in a ring around the leaf veins outside the bundle sheath cells.
    -C3 plants: These are the plants, that fix carbon dioxide directly from the air. The C3 plant gets this name because the first molecule produced in the cycle is a 3-carbon molecule (3-phosphoglyceric acid). During the process, Carbon dioxide is fixed into a C3 compound, by the special enzyme RUBISCO.
    -C4 plant: These are the plants, that follow C4 pathway (Hatch-Slack pathway) and gets this name because the first molecule produced in the cycle is a 4-carbon molecule (malic acid or aspartic acid).
    -CAM plant: These are the plants, that follow CAM (Crassulacean Acid Metabolism) pathway and have a method of carbon fixation found in dry atmospheric condition. In these plants, photosynthesis occurs during the day, but the stomata open only during the night for exchange of gases

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