$CAM$ helps the plants in

$I.$ They have special leaf anatomy. $II.$ They tolerate high temperature.
$III.$ Lack photorespiration. $IV.$ Greater productivity of biomass.
These are the probable characters of:

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.

In $C_4$ plants,mesophyll cells are connected to bundle sheath cells with the help of:

Some of these terms/chemicals are associated with the $C_{4}$ cycle. Explain.
$(a)$ Hatch-Slack pathway
$(b)$ Calvin cycle
$(c)$ $PEP$ carboxylase
$(d)$ Bundle sheath cells

Assertion: $C_4$ pathway of $CO_2$ fixation is found in some tropical plants.
Reason: In this pathway,$CO_2$ is fixed by $3C$ compound.