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प्रश्न
What is meant by emasculation?
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उत्तर
Emasculation is the removal of stamens, mainly the anthers, from the flower buds before their dehiscence. The removal is mainly done to avoid self-pollination. Emasculation is one of the measures in the artificial hybridization.
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संबंधित प्रश्न
Why do moss plants produce very large number of male gametes? Provide one reason. What are these gametes called?
Explain the post-pollination events leading to seed production in angiosperms.
Add a note on pollination mechanism in Salvia.
Give the floral adaptations for anemophily.
The transfer of pollen grains from the anther to the stigma of the same or of another flower of the same kind is known as ______.
Draw a diagram of a section of a megasporangium of an angiosperm and label funiculus, Micropyle, embryosac and nuclleus.
Write two ways in which pollination may occur in plants.
Name two characteristics of flowers in which pollination occur by wind.
Complete the following chart and rewrite.
| Sr.No. | Agencies | type of pollination |
| 1 | Water | .................... |
| 2 | ........................... | Entomophily |
| 3 | Bat | .................... |
| 4 | ....................... | Ornithophily |
(Or)
Explain outbreeding devices in angiospermic plants.
Select and write the most appropriate answer from the given alternatives for the following subquestion:
A versatile anther is an adaptation for _______ type of pollination.
Type of Interaction where an individual sacrifices its own welfare (life) for the benefit of another animal of its own species is ______.
Answer the following question.
Write the difference in the characteristics of the progeny produced as a result of the two processes.
Put a tick mark (✓) against the correct alternative in the following statements
Vegetative propagation is not observed in:
Describe the Advantages and Disadvantages of self-pollination to the Plant.
What are the adaptations which are required in cross-pollinated
What are the adaptations which are required in self-pollinated plants?
Very short answer type question:
What is hydrophily?
Chief pollinators of agricultural crops are ______.
Anemophily type of pollination is found in ______.
Feathery stigma occurs in ______.
Plants with ovaries having only one or a few ovules are generally pollinated by ______.
Insect pollinated flowers are ______.
Which one of these statements is incorrect?
The following statements seem to describe the water-pollinated submerged plants.
Which type of pollination does the figure indicate?
In which one of the following pollination is autogamous?
What is self-incompatibility?
Mention any one example of the anemophilous flower.
What are the major abiotic factors that influence habitat?
When and why does a plant breeder employ the emasculation technique?
