Question

Select the INCORRECT statement related to kranz anatomy.

• A. Undifferentiated mesophyll occurs in concentric layers around vascular bundles
• B. Centrifugal chloroplasts are in bundle sheath cells
• C. Large sized bundle sheath cells are arranged in a wreath-like manner in one to several layers
• D. Chloroplasts of bundle sheath cells possess well developed grana lamellae

Answer 1

Answer: (D)

Chloroplasts of bundle sheath cells possess well developed grana lamellae

Kranz anatomy is a characteristic of $C_4$ plants. In kranz anatomy, the mesophyll is undifferentiated and its cells occur in concentric layers around vascular bundles. Vascular which are surrounded by large-sized bundle sheath cells which are arranged in a wreath like a manner in one to several layers. The chloroplasts of mesophyll cells are smaller, they have well-developed grana and a peripheral reticulum but no starch. Mesophyll cells possess enzyme PEP case for initial fixation of $C{O}_2$. The chloroplasts of the bundle sheath cells are agranal. they possess a peripheral reticulum and starch grains. Bundle sheath cells possess enzyme RuBisCO.

So, the correct option is 'Chloroplasts of bundle sheath cells possess well-developed grana lamellae'.