The gametophyte is not an independent, free living generation in (a) Polytrichum (b) Adiantum (c) Marchantia (d) Pinus.
Option D In gymnosperms (like Pinus), the male and female gametophyte do not have an independent free living existence. They remain within the sporangia retained on the sporophytes i.e., female gametophyte (within megasporangium) and male gametophyte (within microsporangium)
