Question

Kranz anatomy is typical of
A) $C_4$ plants
B) $C_3$ plants
C) $C_2$ plants
D) CAM plants

Answer 1

In Kranz Anatomy, sugar cane, maize etc. are found. These plants are ideal for small amounts of nitrogen and carbon dioxide.

Complete answer: The term Kranz stands for "wreath" or "ring." Kranz anatomy is a specialised arrangement in plants where the mesophyll cells are arranged in a ring-like pattern around the bundle-sheath cells. In the bundle-sheath cells, the number of chloroplasts is more than those of the mesophyll cells. In three different steps, the Kranz anatomy is developed and they are procambium initiation, the specification of bundle sheath and mesophyll cells, and development of Chloroplast and incorporation of the $C_4$ cycle
Now, let us find the solution from the options-
A special arrangement identified in $C_4$ plants is the Kranz anatomy.
In the $C_4$plants, the light-dependent responses and the Calvin cycle are separated.
In the bundle-sheath cells, the Calvin cycle happens and the mesophyll cells have light-dependent reactions.
This is achieved to solve the photorespiration mechanism known as energy-wasting, which happens in all $C_3$ plants.
In order to suppress photorespiration, CAM plants adopt a certain metabolic pathway. These plants isolated the processes in time instead of following the $C_4$ pathway where light-independent reactions and the Calvin cycle occur in various locations.

Thus, the correct answer is option (A) C4 plants.

Note: In $C_4$ plants like maize, the leaf veins (V) are surrounded by swollen bundle sheath cells (BS) and enclosed by mesophyll (M) cells. In a V-BS-M-M-BS-V formation, each pair of leaf veins is divided by two BS cells and M cells. This formation is known as Kranz Anatomy in general.