In the life cycle of plants, those in the group called vascular plants (specifically, the seed plants such as gymnosperms and angiosperms) primarily spend most of their time in the sporophyte stage.
In the plant life cycle, there are two alternating generations: the sporophyte (diploid) generation and the gametophyte (haploid) generation. In vascular plants, the sporophyte is the dominant and more complex stage, consisting of structures such as roots, stems, and leaves, while the gametophyte is typically reduced and often dependent on the sporophyte for survival.
In contrast, non-vascular plants like mosses predominantly exhibit the gametophyte stage, which is typically the more prominent and recognizable part of their life cycle.