Plant Life Cycle and Metagenesis

In the life cycle of sexually reproducing plants, there is alternation of generations (metagenesis) between gamete-producing haploid gametophyte and spore-producing diploid sporophyte.

However, different plant groups as well as individual plants may show different patterns of life cycles. 20 life cycles are haplontic, diplontic or haplo-diontic (intermediate).

Note: The above notes in the image(s) are taken from a personal notebook which was initially not intended to be shared online. Please excuse the rough handwriting and the spelling errors, if any.