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प्रश्न
Briefly discuss any two methods by which plants avoid self-pollination.
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उत्तर
The two methods to avoid self-pollination are:
- Dichogamy - In bisexual flowers, anthers and stigma mature at different times. Due to these maturation times, self-pollination is not possible.
- Prepotency - In numerous plants, pollen grains from one flower easily germinate on the stigma of another flower that is genetically distinct, as opposed to pollen grains from the same flower. This prevents self-pollination.
संबंधित प्रश्न
Why do moss plants produce very large number of male gametes? Provide one reason. What are these gametes called?
Geitonogamous flowering plants are genetically autogamous but functionally cross-pollinated. Justify.
Describe the characteristic features of wind pollinated flowers.
Describe the structure of its microsporangium.
Describe the advantages and disadvantages of cross-pollination to the plant.
What are the adaptations which are required in cross-pollinated
From among the situations given below, choose the one that prevents both autogamy and geitonogamy.
Male and female flowers are present on different plants (dioecious) to ensure xenogamy, in ______.
Advantage of cleistogamy is:
From among the situations given below, choose the one that prevents both autogamy and geitonogamy.
