Question

In leaves of $C_4$ plants malic acid synthesis during $C{O}_2$ fixation occurs in:

• A. Bundle sheath
• B. Guard cells
• C. Epidermal cells
• D. Mesophyll cells

Answer 1

The correct option is D Mesophyll cells

In leaves of $C_4$ plants, malic acid synthesis during $C{O}_2$ fixation occurs in mesophyll cells. The mesophyll cells perform $C_4$ cycle and the cells of bundle sheath perform $C_3$ cycle.