Question

In Kranz anatomy, the bundle sheath cells have

• A. thin walls, many intercellular space and no chloroplast
• B. thick walls, no intercellular spaces and large number of chloroplasts
• C. thin walls, no intercellular spaces and several chloroplasts
• D. thick walls, many intercellular space and few chloroplasts

Answer 1

Answer: (B)

thick walls, no intercellular spaces and large number of chloroplasts

Answer 2

$C_{4}$ -plants have characteristic leaf anatomy, called 'Kranz anatomy'. 'Kranz' means 'wreath' (ring) and is a reflection of the arrangement of cells. The large sized bundle sheath cells may form several layers around the vascular bundles. These cells are characterised by having a large number of a chloroplast, thick walls impervious to gaseous exchange and no intercellular spaces.