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NTA AbhyasNTA Abhyas 2020Sexual Reproduction in Flowering Plants
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Solution:
The anther is a bilobed and four-sided tetragonal structure having four microsporangia. These microsporangia later develop into a pollen sac where the pollen grain is formed. Each microsporangium or pollen sac has four walls - epidermis, endothecium, middle layer, and tapetum. Stamen is microsporophyll while pollen grains are microspores