Practice question

Meiosis in microsporogenesis occurs specifically in diploid microspore mother cells also called pollen mother cells within anther locules surrounded by nutritive tapetum layer and middle layers. These cells undergo meiosis I with homologous chromosome separation and meiosis II with sister chromatid separation generating haploid tetrads of microspores encased in callose walls ensuring genetic recombination and chromosome reduction halving genome ploidy. Tetrads subsequently separate after enzymatic callase action secreted by tapetum. Resulting microspores differentiate into pollen grains via mitotic divisions establishing basis for haploid male gametophyte generation and genetic diversity.