Question

Which life cycle components appear only in mosses and ferns?

Answer 1

both show haplo diplontic life cycle

Answer 2

It shows both haploid and diploid generations. Life cycle of ferns or mosses have two life stages; sporophyte generation and gametophyte generation.

Sporophyte plant is a diploid in nature and produces spores where gametophyte plant is haploid and produce gametes. This type of life cycle is called alternation of generation.