Question: Kranz anatomy is found in _____ plant.
Options:
C2
C3
C4
CAM
Kranz Anatomy
→ 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.
→ Kranz anatomy is found in the leaves of C4 plants, such as sorghum, maize, sugarcane, and millets.
→ The differences between the C4 and C3 plants are that the bundle sheath cells of C3 plants do not contain chloroplasts, whereas the bundle sheath cells of C4 plants do.
📌 Important Points
→ C3 plants: These are the plants that fix carbon dioxide directly from the air. The first molecule produced in the cycle is a 3-carbon molecule (3-phosphoglyceric acid), and carbon dioxide is fixed into a C3 compound by the special enzyme RUBISCO.
→ C4 plants: These are the plants that follow the C4 pathway (Hatch-Slack pathway) and get their name because the first molecule produced in the cycle is a 4-carbon molecule (malic acid or aspartic acid).
→ CAM plants: These are the plants that follow the CAM (Crassulacean Acid Metabolism) pathway and fix carbon in dry atmospheric conditions. In these plants, photosynthesis occurs during the day, but the stomata open only during the night for the exchange of gases.