Unlike many nonseed plants, the sporophyte is the larger, dominant generation which maintains itself by photosynthesis and nutrient uptake.
(the sporophyte; is; the larger, dominant generation which maintains itself by photosynthesis and nutrient uptake) (the larger, dominant generation; maintains; itself)
the sporophyte the larger, dominant generation
is maintains
the larger, dominant generation which maintains itself by photosynthesis and nutrient uptake
itself