Describe the process of microsporogenesis in …

Microsporogenesis: Sporogenous cells fill the whole interior of a microsporangium. They divide with the growth of another and increase their number. Ultimately they are transformed into microspore mother cells which are diploid (possess two genomes or double set of chromosomes). The microspore mother cells or microsporocytes develop an internal layer of callose which breaks the plasmodesmal connections among themselves. The separated mother cells round off and undergo meiosis to produce tetrads of haploid microspores or pollen grains. The phenomena is called microsporogenesis. The pollen grains of a tetrad grow and separate from one another. However, they remain attached forming compound pollen grains in Typha. In Calotropis and related plants, all the pollen grains of another lobe remain united in a single sac called pollinium. Two pollinia of adjacent another are attached to produce a translator.