Question

What is the site of $C_{3}$ cycle in $C_{3}$ and $C_{4}$ plants?

• A. In $C _{3}$ plants-Mesophyll cell and in $C _{4}$ plants-Bundle sheath cell
• B. In $C _{3}$ plants-Bundle sheath cell and in $C _{4}$ plants-Mesophyll cell
• C. In $C _{4}$ plants-Bundle sheath cell and in $C _{3}$ plants-Bundle sheath cell
• D. In $C _{3}$ plants-Mesophyll cell and in $C _{4}$ plants-Mesophyll cell

Answer 1

Answer: (A)

In $C _{3}$-plants, all the reactions of $C _{3}$ or Calvin cycle occur in mesophyll cells of leaves, while $C _{4}$-plants show a distinct type of anatomy called as Kranz anatomy, where two different regions mesophyll cells and bundle sheath, are involved in this process.