Question

What is the role of large bundle sheath cells found around the vascular bundles in \(C_4\) plants?

• A. To provide the site of photorespiratory pathway
• B. To increase the number of chloroplast for the operation of Calvin cycle
• C. To enable the plant to tolerate high temperature
• D. To protect the vascular tissue from high light intensity

Answer 1

The Correct Option is B

The particularly large cells around the vascular bundles of the C₄ plants are called bundle sheath cells, and the leaves which have such anatomy are said to have ‘Kranz’ anatomy. In C₄ plants the bundle sheath cells may form several layers around the vascular bundles; they are characterised by having a large number of chloroplasts, thick walls impervious to gaseous exchange and no intercellular spaces. So, bundle sheath cells found around the vascular bundles of C₄ plants increase the number of chloroplasts for the operation of the Calvin cycle.

So, the correct option is (B): To increase the number of chloroplast for the operation of Calvin cycle