Kranz anatomy is one of the characteristics of the leaves of

In which type of plants do the stomata remain closed during the daytime and open during the night?

Photosynthesis in $C_4$ plants is relatively less limited by atmospheric $CO_2$ levels because:

Which enzyme catalyzes $CO_2$ fixation in $C_4$ plants?

What is the primary $CO_2$ acceptor in $C_4$ plants?

In what kind of plants do you come across 'Kranz' anatomy? To which conditions are those plants better adapted? How are these plants better adapted than the plants,which lack this anatomy?