In gymnosperms,the pollen drop is the:

In a gymnosperm,if the haploid chromosome number is $12$,what will be the number of chromosomes in its root and endosperm,respectively?

In which plants does pollination occur exclusively through wind?

Which gymnosperm plant possesses a subterranean tuberous stem?

$S :$ $Sequoia$ $sempervirens$ is an example of an angiosperm.
$R :$ $Eucalyptus$ is the tallest tree in the world.

$Ephedrine$ is obtained from..........