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प्रश्न
How is the three-celled male gametophyte different from two-celled male gametophyte?
फरक स्पष्ट करा
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उत्तर
The two-celled stage is when pollen grains are shed in more than 60% of angiosperms. In others, before pollen grains are expelled, the generative cell undergoes mitosis to produce the two male gametes (three-celled stage).
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