Question

Kranz anatomy is found in (A) (B) (C) (D)

• A. Stems of $C_4$ plants
• B. Stems of $C_3$ plants
• C. Leaves of $C_4$ plants
• D. Leaves of $C_3$ plants.

Answer 1

The correct option is C Leaves of $C_4$ plants

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 characterised by having 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.