Question

Kranz anatomy is not seen in (i) Maize (ii) Sorghum (iii) Tomato.

• A. i and ii
• B. ii only
• C. i only
• D. iii only

Answer 1

The correct option is D iii only

Kranz anatomy is found in leaves of $C_4$ plants. The $C_4$ pathway requires the presence of two types of cells i.e. mesophyll cells and bundle sheath cells. The particularly large cells around the vascular bundles of $C_4$ plants are called bundle sheath cells, these cells may form several layers around the vascular bundles, they are characterized by having a large number of chloroplasts, grana are absent, thick walls impervious to gaseous exchange and no extracellular spaces. This special anatomy of leaves of the $C_4$ plants is called Kranz anatomy. 'Kranz' means wreath and is a reflection of the arrangement of cells. So, Kranz anatomy is not seen in tomato as it is not a $C_4$ plant.