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

For the observation of $Kranz$ anatomy,which plant is useful?

Dimorphic chloroplasts are present in

In which of the following is phosphorylation absent?

How many types of photosynthetic cells are found in $C_4$ plants?

Identify the correct characters of bundle sheath cells in $C_4$ plants from the following list:
$1.$ Thick walls.
$2.$ Intercellular spaces are present.
$3.$ Impervious to gaseous exchange.
$4.$ Contain grana.
$5.$ Contain thylakoids.