what does the sporophyte of an angiosperm plant consist of
1 All plants have a life cycle with alternation of generations. 2  Plants alternate between diploid sporophyte and haploid gametophyte generations, and between sexual reproduction with gametes and asexual reproduction with spores. 3  In nonvascular plants, the gametophyte generation is dominant.he flower in Figure above is obviously an innovation in the angiosperm life cycle. Flowers form on the dominant sporophyte plant. They consist of highly specialized male and female reproductive organs. Flowers produce spores that develop into gametophytes.