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प्रश्न
Write different modes of pollination in detail with suitable examples.
उत्तर
The two modes of pollination are:
(i) Self-pollination - It is the transfer of pollens produced within the anther of a flower to the stigma of the same flower or to the stigma of another flower of the same plant. In such flowers, pollination is ensured since the flowers bear similar genetic characters. Self-pollination can occur in bisexual or monoecious flowers. Examples of plants showing self-pollination are Mirabilis, Arachis, etc.
(ii) Cross-pollination - It is the transfer of pollen grains from the anthers of a flower of one plant to the stigma of a flower of another plant. Cross-pollination occurs in unisexual or dioecious flowers such as papaya, maize, jasmine, rose etc.
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संबंधित प्रश्न
List the different types of pollination depending upon the source of pollen gain.
Can cross-pollination occur in cleistogamous flowers? Give reason for your answer.
Can a unisexual flower be self pollinated?
Fill in the blanks with suitable words.
_______ is a water-pollinated flower.
Give one word/term for the following:
Pollination of flowers by birds.
Coelacanth was caught in South Africa. State the significance of the discovery of Coelacanth in the evolutionary history of vertebrates.
A particular species of plant produces light, non-sticky pollen in large numbers and its stigmas are long and feathery. These modifications facilitate pollination by ______.
Even in absence of pollinating agents seed-setting is assured in ______.
Male and female flowers are present on different plants (dioecious) to ensure xenogamy, in ______.
What is self-incompatibility?
