Which of the following is TRUE about alternation of generati

Which of the following is TRUE about alternation of generations?

It occurs in haploid organisms

Solution

Answer: It occurs in some multicellular organisms

Reason:

Alternation of generations lifecycle of the land plants: It occurs in some eukaryotes, in which sporophytic & gametophytic stages both are exhibited by alternating generations (haploid to diploid & diploid to haploid) of plant species and in fungal species. This phenomenon does not occur in all sexually reproducing species

In case of land plants, decreased significance of haploid stages of gametophytes and more advanced and developed large pollen and egg cells (megakaryophytes) are produced due to production of flowers with inflorescence, stigma, style, anthers, ovules etc.

More dominant- stage of the land plant life cycle (gymnosperm or angiosperm) is the development of sporophytes from a zygote due to fusion of haploid gametes of pollen with female ovules finally to form \"a diploid zygote\" with diploid stages, production of endosperms with cotyledons, seeds, inflorescence, flowers and fruits.