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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
(i) Name the part marked 'A' in the diagram.
(ii) How dose 'A' reachese part 'B'?
(iii) State the importance of the part 'C'.
(iv) What happens to the part marked 'D' after fertilisation is over?
State significance of pollination.
Sketch the reproductive parts of a flower.
Name the swollen lower part of the carpel.
Fill in the following blank with suitable word :
The term used to refer to the transfer of pollen from the stamen of one flower to the carpel of another flower of the same species is...........
Fill in the blanks and rewrite the completed statements:
Lymph flows in _______________ direction.
__________ is present in unisexual flower.
Which of the following are the chemical components of the wall of pollen tube?
Pineapple fruit develops from ______.
Trace the path a male gamete takes to fertilise a female gamete after being released from the penis.
