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46. Which is the correct order ofdevelopment of pollens?(A) Pollens male gametespollen tube » generative cell(B) Pollenspollen tube>generative cellmalegametes(C) Pollens male gametes »generative cell -»pollen tube(D) Pollens generative cellpoilen tube - >male gametes |
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Answer» The correct development sequence is as follows: Sporogenous tissue – pollen mother cell – microspore tetrad – Pollen grain – male gamete During the development of microsporangium, each cell of the sporogenous tissue acts as a pollen mother cell and gives rise to a microspore tetrad, containing four haploid microspores by the process of meiosis (microsporogenesis). As the anther matures, these microspores dissociate and develop into pollen grains. The pollen grains mature and give rise to male gametes. |
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