The life cycle in which haploid gametophyte phase is dominant is termed as-
The life cycle in which haploid gametophyte phase is dominant is termed as-
The correct option is D Haplontic
The life cycles of all sexually reproducing plants follow a pattern of alternation between a haploid, sexual generation called gametophyte with a diploid, asexual generation called sporophyte. This phenomenon of alternation between gametophyte (n) and sporophyte (2n) in the life cycle of a plant is called alternation of generations. The haplontic life cycle is the primitive type of life cycle characterized by dominant gametophyte and zygotic meiosis. Here, free-living sporophyte is absent. The sporophyte generation is represented only by the one-celled zygote, sometimes called zygospore. The zygote undergoes meiosis to form haploid spores. Each spore germinates (divide mitotically) to form gametophyte.
Haplontic
The life cycles of all sexually reproducing plants follow a pattern of alternation between a haploid, sexual generation called gametophyte with a diploid, asexual generation called sporophyte. This phenomenon of alternation between gametophyte (n) and sporophyte (2n) in the life cycle of a plant is called alternation of generations. The haplontic life cycle is the primitive type of life cycle characterized by dominant gametophyte and zygotic meiosis. Here, free-living sporophyte is absent. The sporophyte generation is represented only by the one-celled zygote, sometimes called zygospore. The zygote undergoes meiosis to form haploid spores. Each spore germinates (divide mitotically) to form gametophyte.
