Plants that bear open or naked seeds are known as ........

In $Cycas$,the microsporangia are borne on the .... side of the microsporophyll.

In $Gymnosperms$,the 'endosperm' represents .....

Which of the following is a dioecious gymnosperm?

The recently discovered anti-cancer drug is obtained from:

Consider the following statements regarding gymnosperms and choose the correct option.
$I.$ In gymnosperms,the male and female gametophytes have an independent existence.
$II.$ The multicellular female gametophyte is retained within the megasporangium.
$III.$ The gymnosperms are heterosporous.
Of these statements: