Practice question

Microspores formed via meiosis inside microsporangia located on microsporophylls assembled into pollen cones male strobili ephemeral. Each microspore haploid undergoes mitosis producing reduced male gametophyte pollen grain containing tube cell and generative cell dividing into two sperm before dispersal. Seed cones contain ovules with megasporangium nucellus protecting megaspore developing into female gametophyte. Anthers define angiosperm microsporangial clusters tetrasporangiate on stamen filament, megasporangia produce female lineage ovule. Distinction highlights heterospory segregation sexes spatially between cone types, facilitating outcrossing as pollen cones release clouds of wind-borne pollen transported toward isolated seed cones receptive via sugary micropyle droplets capturing efficiently.