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प्रश्न
What is the function of the pollen tube? Explain it with the help of a diagram.
उत्तर
The pollen tube grows out of the pollen grains by breaking through its exine. The pollen tube grows through the stigma and style by dissolving these tissues with the help of enzymes and reaches the ovary, where it enters the ovule through a minute pore called the micropyle.
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संबंधित प्रश्न
Given ahead is a diagrammatic sketch of the sectional view of a germinating pollen grain. Study the same and then answer the question that follows:
What is the function of the part labelled '4'?
Give any four points of significance of double fertilization.
Write a short note on Pollen kitt.
Write a short note on Heterostyly.
By which of the following the megasporangium proper of an angiosperm ovule is represented?
From the following identify the fate of the male gametes discharged in the synergid.
If the cells of the nucellus in the angiosperm ovule contain 24 chromosomes, then ____________ chromosomes will be present in the endosperm of a self-pollinated flower.
The female gametophyte of a typical dicot at the time of fertilisation is ______.
Double fertilisation was first discovered in 1898 by ______ in Fritillaria and Lilium.
What is the function of the two male gametes produced by each pollen grain in angiosperms?
