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प्रश्न
Explain following term:
Polyembryony
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उत्तर
It is the development of more than one embryo inside the seed, which consequently results in the emergence of multiple seedlings. Polyembryony may be true or false depending upon whether many embryos arise in the same embryo sac in the same ovule.
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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.
Why are some seeds referred to as apomictic seeds?
Fill in the blank:
The ________contains the egg or ovum.
Fill in the blank:
________takes place when one male gamete and the egg fuse together. The fertilized egg grows into a seed from which the new plants can grow.
Fill in the blank:
________is the transfer of pollen grains from the anther of the flower to the stigma of the same or a different flower
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 | ||
The polyembryony commonly occurs in ______.
The occurrence of two or more embryos in one ovule is called ______
Give reason: Nucellar polyembryony is significant in horticulture.
