What do you understand by alternation of generations?

$\text{Alternation of generation}$

The alternation of the life cycle of a plant between the haploid gametophytic phase and the diploid sporophytic phase is known as alternation of generations.

$\text{Example}$

• For example, a bryophyte completes its life cycle in two distinct phases, a gametophyte stage (haploid) and sporophyte stage (diploid).
• The sporophyte produces haploid spores which develop and give rise to the gametophytes.
• Gametophytes are the gamete-bearing structures.
• The gametes of opposite sex produced by gametophytes fuse and form the zygote.
• Zygote develops and gives rise to sporophytes. This cycle continues.