(N/A) In a diplontic life cycle,the diploid sporophyte is the dominant,photosynthetic,and independent phase of the plant. The gametophytic phase is represented by a single to few-celled haploid gametophyte.
Key features of the diplontic life cycle include:
$1$. The sporophyte $(2n)$ undergoes meiosis to produce haploid spores $(n)$.
$2$. These spores germinate to form the gametophyte $(n)$.
$3$. The gametophyte produces gametes through gametogenesis.
$4$. Syngamy (fusion of gametes) results in the formation of a diploid zygote $(2n)$,which develops back into the sporophyte.
All seed-bearing plants,i.e.,all gymnosperms and angiosperms,follow this pattern.