The gametophyte is not an independent,free-living generation in

$A$: Microspores and megaspores are produced in the same lax in gymnosperms.
$R$: Lax represents a compact strobilus which bears microsporophyll and megasporophyll.

In $Ginkgo$,the male gametes are ...... .

Gymnosperms differ from Pteridophytes due to the presence of:

Which of the following is a fossil plant?

The ovule of $Cycas$ is: