When and where does reduction division take place in the life cycle of a liverwort, a moss, a fern, a gymnosperm and an angiosperm?

Explanation

Reductional division in angiosperm take splace at the time of formation of pollen grain and embryosac or female Gametophyte or megaspores. Microsporogenesis or formation of microspore ( that is pollen grains ) occurs inside the pollen sac from the sporogenous tissue, that is, microspore mother cell. Megaspores are formed from megaspore mother cell in side the megasporangium ( ovule ).