Which of the following is a $C_4$ plant?

Phosphoenolpyruvate $(PEP)$ is the primary $CO_2$ acceptor in .......

In sugarcane plants,$^{14}CO_2$ is fixed into malic acid. Which enzyme is responsible for the fixation of $CO_2$ in this process?

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.

Identify the location and function of the following structures:
$(1)$ Chloroplast
$(2)$ Cells of Bundle sheath

Who discovered the $C_4$ cycle?