Question

Which of the following is a C4 plant?

• A. Rice
• B. Wheat
• C. Cotton
• D. Sugarcane

Hint:

Photosynthetic pathways:
C3 Pathway: Most common (e.g., rice, wheat, cotton, beans).
C4 Pathway: Adapted to hot, sunny climates, more efficient under these conditions (e.g., sugarcane, maize, sorghum, amaranth). C4 plants often have Kranz anatomy and suppress photorespiration.

Answer 1

The Correct Option is D

Step 1: C4 plants show Kranz anatomy, a ring of large chloroplast-rich bundle-sheath cells.
Step 2: Sugarcane, like maize and sorghum, has this anatomy and uses the C4 pathway.
Step 3: Rice, wheat and cotton are ordinary C3 plants without Kranz anatomy.
Step 4: Correct answer: Sugarcane.