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प्रश्न
Explain the pollination process in maize.
उत्तर
Pollination in Maize - Pollination in maize is brought about by the wind. The maize plant is monoecious. The cluster of male flowers called tassel are borne terminally whereas the female inflorescence i.e. cobs are borne laterally at lower levels. Silky thread-like styles project out of the female flowers. Male flowers produce many heavy pollen grains, which get released during mild winds and fall down vertically. They fall on the stigma, bringing about pollination.
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संबंधित प्रश्न
Match the items in Column A with those in Column B.
|
Column A |
Column B |
|
(a) Generative nucleus |
(i) Pollen tube |
|
(b) Germ pore |
(ii) Endosperm nucleus |
|
(c) Exine |
(iii) Testa |
|
(d) Secondary nucleus |
(iv) Fertilization |
|
(e) Integument |
(v) Male nuclei |
|
(f) Egg nucleus |
(vi) Rough |
What happens to the following after fertilization?
Petals
Given ahead is a diagrammatic sketch of the sectional view of a germinating pollen grain. Study the same and then answer the question that follows:
Name the parts labelled 1, 2, 3, 4 and 5.
Given ahead is a diagrammatic sketch of the sectional view of a germinating pollen grain. Study the same and then answer the question that follows:
Where does the germination of the pollen grain take place and how?
What is a fruit?
The correct order of haploid, diploid, and triploid structure in fertilized embryo sac is
In majority of plants pollen is liberated at
Write a short note on Pollen kitt.
Double fertilization is characteristic of ______.
Select the option that shows the correctly identified 'U', 'X', 'Y' and 'Z' in a developing dicot embryo.
