schematically represent haplo-diplontic life cycle

Haplo-diplontic life cycle:

This​ type of life cycle involves the alternation of two vegetative individuals, the haploid gametophyte and diploid sporophyte. In this case sporogenic meiosis occurs in sporophyte to produce spores (meiospores). Here both the generations are conspicuous. This type of life cycle is exhibited by some green algae, brown algae, bryophytes and pteridophytes.