Which of the following plants does not have seeds enclosed within an ovary?

Plants that produce seeds but do not bear flowers are classified into which of the following groups?

Gymnosperms do not have

Bordered pits are very common in

In gymnosperms,male gametes are discharged near the mouth of archegonia by:

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: