Advertisements
Advertisements
प्रश्न
Once the pollen reaches the stigma, the pollen tube traverses down the ________ to the ovary where fertilization occurs.
उत्तर
Once the pollen reaches the stigma, the pollen tube traverses down the style to the ovary where fertilization occurs.
Explanation:
Once the pollen reaches the stigma, it grows a tube called the pollen tube, which travels down the style. The style is a narrow, tube-like structure that connects the stigma to the ovary. The pollen tube continues down the style until it reaches the ovary, where it releases the sperm cells to fertilize the ovule. This fertilization process leads to the development of seeds.
APPEARS IN
संबंधित प्रश्न
State what is apomixis. Comment on its significance. How can it be commercially used?
Explain any three advantages that seeds offer to angiosperms.
Explain the different ways apomictic seeds can develop, Give an example of each.
State what is apomixis. Write its significance. How can it be commercially used?
How polyembryony can be commercially exploited?
Fill in the blank:
The _________ collect the pollen grains.
Fill in the blank:
The ________contains the egg or ovum.
Fill in the blanks:
The ______ are coloured to attract the insects that carry the pollen. Some flowers also produce ______ or ______ that attracts insects.
Match the column.
| Column - I (Structure before seed formation) |
Column - II (Structure after seed formation) |
||
| A. | Funiculus | I. | Hilum |
| B. | Scar of ovule | II. | Tegmen |
| C. | Zygote | III. | Testa |
| D. | Inner integument | IV. | Stalk of seed |
| V. | Embryo | ||
Which of the following is TRUE with respect to cleavage polyembryony?
