'Kranz' anatomy of leaves is found in

Presence of bundle sheath is a characteristic of

The enzyme which catalyzes the primary carboxylation step in the photosynthetic $C_4$ cycle is:

Choose the correct statements regarding $C_4$ plants:
$(1)$ $C_4$ plants do not tolerate higher temperatures.
$(2)$ $C_4$ plants show a response to high light intensities.
$(3)$ $C_4$ plants lack a process called photorespiration.
$(4)$ Productivity of $C_4$ plants is less than $C_3$ plants.
$(5)$ $C_4$ acid $OAA$ is formed in the mesophyll cells.

Tropical plants like sugarcane have a very high capacity for $CO_2$ fixation due to:

Succulents are known to keep their stomata closed during the day to check transpiration. How do they meet their photosynthetic $CO_2$ requirements?