Botany - Sexual Reproduction in Flowering Plants Question with Solution | TestHub

The anther is the part of the stamen where pollen grains are produced. It has the microsporangia and has multiple layers surrounding the pollen sac. Pollen sac is the site for production of pollen grain. A typical microsporangia has four layers - Epidermis (outermost layer, function- protection), endothecium (hygroscopic in nature, function - promote dehiscence) followed by middle layers (function- protection) and tapetum (innermost layer, nutritive in function). The endothecium has fibrous thickening which again helps in dehiscence and pollen dispersal.