Trace the development of microsporocytes into mature pollen grains.
When the anther is at an early stage of development, the microsporangium has closely arranged homogenous cells which form the Sporogenous tissues. 1. Each cell of sporogenous tissue will become a Pollen mother cell (PMC) and also forms microspore tetrad or Pollen grains. 2. But Some of them lose this Potential and later get differentiated into a pollen or microspore mother cell (MMC) 3. Every microspore mother cell (MMC) undergoes meiosis and produces a bunch of four haploid cells, which is called microspore tetrad. When the anther gets matured, the microspores get dissociated from the tetrad and develop into pollen grains. 5. The mitosis happens in the nucleus of microspores to produce bigger vegetative cells and smaller generative cells. They form a double-layered wall – outer exine is made up of sporopollenin And the inner intine is made up of cellulose and pectin. Generally, the pollen grains are released at two-celled stages.
