Answer:
3. The gametophyte plant of the moss and the fern differ in several ways.
1. Size: The gametophyte plant of the moss is smaller than that of the fern.
2. Structure: The gametophyte of the moss is normally flat and ribbon-like, while the gametophyte of the fern is normally more complex and branched.
3. Location: The gametophyte of the moss is typically located on or near the soil surface, while the gametophyte of the fern is usually found attached to the undersides of leaves or within the soil.
4. Reproduction: The gametophyte of the moss typically reproduces through the production of sperm and egg that eventually combine to form a sporophyte. The gametophyte of the fern reproduces by forming structures called archegonia and antheridia, which produce eggs and sperm, respectively.
5. Life cycle: The gametophyte of the moss is the dominant phase, while the gametophyte of the fern is a transient phase in the life cycle, giving way to the sporophyte phase as the dominant phase.
Overall, while the gametophyte plant of the moss and the fern share some similarities, they differ significantly in size, structure, location, reproduction, and life cycle.