Question

Characteristics of bundle sheath cells in $\text{C}_4$ plants}
(A) Have thin cell walls
(B) Contain centrifugally arranged chloroplasts
(C) Contain stacked thylakoid membranes and do not have starch granules
(D) Carry out light-independent reactions of photosynthesis

• A. (A), (B) and (D) only.
• B. (B), (C) and (D) only.
• C. (A), (B), (C) and (D).
• D. (B) and (D) only.

Hint:

To remember this, recall that the Calvin cycle occurs inside the bundle sheath cells of $\text{C}_4$ plants. To prevent oxygen from competing with $\text{CO}_2$ at RuBisCO, these chloroplasts lack grana (are agranal, so they cannot perform oxygen-producing light reactions) but are packed with starch grains.

Answer 1

The Correct Option is D