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प्रश्न
How does the process of fertilisation take place in flowers?
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उत्तर
- When pollen lands on the stigma, it germinates and gives rise to a pollen tube that passes through the style and reaches the ovary of a pistil.
- When the pollen tube reaches an ovule, it releases the male gametes. A male gamete fuses with a female gamete in the ovule.
- This process is known as fertilisation. The cell which is formed after the fusion of a male and a female gamete is known as zygote.
- This zygote divides several times in order to form the embryo present inside the seed.
Process of fertilisation
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संबंधित प्रश्न
Name the parts labelled as A, B, C and D in the diagram given below:
What changes take place in the flower after fertilisation which lead to the formation of seeds and fruit?
Mention the function of Stigma.
Draw a diagram of a pistil showing pollen tube growth into the ovule and label the following:
Pollen grain, male gamete, female gamete, ovary.
What is phototropism?
Pollen grains are formed by _________ division in locules of anthers.
Conidia are formed endogenously while zoospores are formed endogenously.
Which out of the following processes does not lead to the formation of clones.
What are the agents for pollination?
Name the reproductive parts of an angiosperm. Where are these parts located? Explain the structure of its male reproductive part.
