Which of the following describes the leaf type in Gymnosperms?

Mark the correct statement with respect to the plant given below-

$A$: The scale leaves of $Araucaria$ are small and brown.
$R$: The gametophytic phase of $Araucaria$ is long-lived and subterranean.

In $Pinus$,the terminal portion of the microsporophyll of the male cone is called:

In which plant are the largest sperms found?

The megasporangium of $Selaginella$ is equivalent to which structure of $Pinus$?