Question

Basic feature of Kranz anatomy of $C_4$ plants is

• A. Presence of chloroplasts in bundle sheath cells
• B. Presence chloroplasts in mesophyll and epidermal cells
• C. Presence of typical granal chloroplasts in bundle sheath cells and rudimentary chloroplasts in mesophyll cells
• D. Presence of rudimentary chloroplasts in bundle sheath cells and typical granal chloroplasts in misophyll cells

Answer 1

Answer: (A)

Presence of chloroplasts in bundle sheath cells

C${}_4$ plants have Kranz leaf anatomy. The vascular bundles, in these leaves, are surrounded by a layer of bundle sheath cells that contain a large number of chloroplasts.

The chloroplasts in these leaves are dimorphic:

Bundle sheath has Large sized and centripetally arranged chloroplasts. The cells perform C${}_3$ cycle.

Mesophyll cells- have a normal type of chloroplasts. The cells perform C${}_4$ cycle.

Hence, the correct answer is 'Presence of chloroplasts in bundle sheath cells'