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प्रश्न
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
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उत्तर
Pollination is the transfer of pollen grains from the anther of the flower to the stigma of the same or a different flower.
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संबंधित प्रश्न
Define Apomixis.
Fill in the blank:
The ______ is the base of the flower to which other floral parts are attached.
Once the pollen reaches the stigma, the pollen tube traverses down the ________ to the ovary where fertilization occurs.
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?
What is polyembryony and how can it be commercially exploited?
What is pollen grain?
Give reason: Nucellar polyembryony is significant in horticulture.
Explain following term:
Polyembryony
