Question

In $C_{4}$ plants, the bundle sheath cells

• A. have thin walls to facilitate gaseous exchange
• B. have large intercellular spaces
• C. are rich in PEP carboxylase
• D. have a high density of chloroplasts

Answer 1

Answer: (D)

have a high density of chloroplasts

Answer 2

In the leaves of $C_{4}$ plants, the vascular bundles are surrounded by bundle sheath of larger parenchymatous cells, which in turn are surrounded by mesophyll cells. Bundle sheath cells have a high density of larger chloroplasts which always lack grana whereas chloroplasts of mesophyll cells are smaller.