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Antipodal and egg cell are the product of meiotic division and rest are not.

1. They are all found in ovule (nucellus, embryo sac and micropyle) while pollen grain is male gametophyte.
2. Fusion of male gamete with the egg is called syngamy.
3. Androgenic haploids are produced by young pollen grains because rest all are the diploid tissue.
4. Microspore is haploid, uninucleate, minute spore produced in large number as a result of meiosis in microspore mother cell inside the microsporangia. These are the first cell of gametophytic generation in angiosperms.

Correct answer: Microspore is haploid, uninucleate, minute spore produced in large number as a result of meiosis in microspore mother cell inside the microsporangia. These are the first cell of gametophytic generation in angiosperms.

Solution

Microspores are produced by meiosis of the microspore mother cell, so they are haploid and represent the first cell of the male gametophytic generation in angiosperms. The other options either describe unrelated structures or contain incorrect biological statements.

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