Identify the incorrect pair for Gymnosperms among the following:

Besides paddy fields,cyanobacteria are also found inside the vegetative part of

Microsporophyll of $Pinus$ is equivalent to:

The endosperm of a gymnosperm is:

Select the false statement.

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: