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21. Describe the structure of a bilobed and dithecous anther as seen in transverse section​

Answer»

Each microsporangium has 100 MICROSPORE mother cells which form 400 microspores by meiosis (100 × 4).
In an anther, there are FOUR microsporangia. So, the total NUMBER of microspores will be 4 × 400 = 1600.
As each microspore FORMS one male gametophyte, 1600 male GAMETOPHYTES can be produced.
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