EXPLAIN MICROSPOROGENESIS FOR 5 MARKS WITH  DIAGRAM 

 

The nucleus of each microspore mother cell undergoes meiosis or reduction division and gives rise to four haploid nuclei. This process is called microsporogenesis. The four nuclei are arranged tetrahedrally and soon get enclosed with cell walls. These are now called microspores or pollen grains. These microspores fiurther divide once by mitosis to form two-celled microspore. differentiates into pollen grain. Each microspore  The pollen grains soon dry up and become powdery while the tapetum gets absorbed. The partition walls between the sporangia get destroyed and the microspores are liberated by the dehiscence of the anther.