Question

Which one has Kranz anatomy?
A. Maize/sugarcane
B. Wheat
C. Rice
D. Potato

Answer 1

Hint: Kranz anatomy is a specialized structure in ${C_4}$ Plants where the mesophyll cells are clustered around the bundle-sheath cells in a ring-like fashion.
This is found in ${C_3}$ grasses such as maize and a few dicots.

Complete answer:
Kranz anatomy is the unique structure found in ${C_4}$ plants.
In these plants, the mesophyll cells are clustered around the bundle-sheath cells in a wretch fashion or ring like fashion.
The number of chloroplasts in the mesophyll cells is less than that in the bundle sheath cells.
This kranz anatomy is mainly seen in ${C_4}$ plants.
In ${C_4}$ plants, the light dependent and Calvin cycle occur in two different places:
1. Light dependent in bundle sheath cells.
2. Calvin cycle takes place in mesophyll cells.
In ${C_4}$ plants such as maize and sugarcane enlarged bundle sheath cells (BS) surround the leaf veins and are surrounded by mesophyll cells.
Each pair of leaf veins is separated by two BS cells and M cells in a V-BS-M-M-BS-V formation.
This type of formation is regarded as Kranz Anatomy.
Maize and sugarcane is regarded as ${C_4}$ plant, so kranz anatomy is seen in these plants.
Wheat: Wheat is not a ${C_4}$ plant, it is regarded as ${C_3}$ plant.
Rice: Rice is also considered as ${C_3}$ plant.
Potato: Potato is also ${C_3}$ plant, so kranz anatomy is not seen in it.

So, the correct option is option A. Maize/sugarcane.

Note:
${C_4}$ Plants:
1. Primary product is 3-phosphoglyceric acid.
2. It occurs in mesophyll cells.
3. Photorespiration rate is very high.
4. Carbon fixation occurs only once.
5. Carbon dioxide fixation is slow.
${C_4}$ Plants:
1. Primary product is four carbon compounds oxaloacetate.
2. It occurs in mesophyll and bundle sheath cells.
3. Photorespiration rate is absent.
4. Carbon fixation occurs twice.
5. Carbon dioxide fixation is faster.