Question

Bundle sheath cells are similar to mesophyll cells in
a. Having grana.
b. Having large number of chloroplasts
c. Being involved in $C{O}_2$ fixation
d. Being impervious to gaseous exchange
e. Their primary $C{O}_2$ fixation product.

• A. Only c & e
• B. Only c
• C. Only a,b& e
• D. Only a & d

Answer 1

Answer: (B)

Only c

Bundle sheath cell and mesophyll cell both are site of carbon dioxide fixation. Bundle sheath have a special anatomy called as kranz anatomy which make it differ from mesophyll cell by having large number of chloroplast, thick walls impervious to gaseous exachange and no intercellular space. There primary carbin dioxide fixation product is also different. In mesophyll it is 3-PGA and in bundle sheath cell it is OAA.

So here option B is correct as both involve in carbon dioxide fixation.