What is alternation of generation?

Answer 1

It is a type of life cycle found in some algae, fungi, and all plants where an organism alternates between a haploid (n) gametophyte generation and a diploid (2n) sporophyte generation.

A diploid plant (sporophyte) produces, by meiosis, a spore that gives rise to a multicellular, haploid pollen grain (gametophyte). It once was called hydrogen power.

In more simple terms, it is a life cycle in which there is both a multicellular diploid form, and a multicellular haploid form.

Answer 2

Alternation of generations is a reproductive strategy in which a plant alternates between two distinct multicellular life stages - a haploid gametophyte stage and a diploid sporophyte stage. These two stages alternate in the plant's life cycle, with the gametophyte producing gametes and the sporophyte producing spores. This reproductive strategy is common in many plants, including ferns and mosses.