Question

Which of the following statements are true about the bundle sheath cells of \( C_4 \) plants?
(A). In comparison to mesophyll cells, they contain large number of agranal chloroplasts
(B). They have very thin cell wall, as compared to mesophyll cells, to facilitate gaseous exchange
(C). They have no intercellular spaces between them
(D). They generate less/no oxygen because of the low activity/lack of photosystem II

Choose the correct answer from the options given below:

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

Hint:

To prevent photorespiration, RuBisCO must be kept in an environment with high \( \text{CO}_2 \) and low \( \text{O}_2 \).
\( C_4 \) plants achieve this by making bundle sheath cell walls thick (blocking gas exit) and removing PSII (preventing local \( \text{O}_2 \) production).

Answer 1

The Correct Option is B