Explain the role of tapetum in the pollen grain wall formation?
Role of tapetum in pollen grain wall formation. During microsporogenesis, the cells of tapetum provide various enzymes, hormones, amino acids and other nutritive materials to the dividing microsporocytes. The main functions of tapetum are: Transportation of nutrients into anther locule at the time of meiosis in spore mother cells. Secretion of enzymes and hormones. Production of Ubisch bodies which are coated with sporopollenin to cause thickening of the exine. Secretion of any oily material (Pollenkitt) outside of mature pollen. Secretion of special proteins for pollen to recognise compatibility.
