Phyllodes are expanded leaf petioles that perform photosynthesis. True or false?

• A. False
• B. Not a botanical term
• C. Found only in cacti
• D. True

Answer: (D)

Phyllodes are modified leaf stalks that become broad and leaf-like, taking over the role of photosynthesis when the true leaves of the plant are reduced or absent. This adaptation is common in many drought-tolerant shrubs, especially Acacia species, where the expanded petiole (the phyllode) provides a large, photosynthetic surface while minimizing water loss. Because phyllodes are expanded petioles performing the same function as leaves, the statement is true. It’s not correct to say they’re unique to cacti, and phyllodes are a recognized botanical term describing this structure.