Answer:
A. larger; smaller
Explanation:
The life cycle of plants is divided into two phases that is the sporophyte and the gametophyte.
In non-vascular plants, the gametophyte generation remains dominant and larger in size compared to the sporophyte but during the evolution of the plants from the non-vascular to vascular plants the gametophyte generation size has reduced while the sporophyte generation has become very large compared to the gametophyte.
Thus, Option-A is the correct answer.
