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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.
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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?
Why angiosperm anthers are called dithecous?
Fill in the blanks with suitable words.
_______ is a water-pollinated flower.
What are the adaptations which are required in cross-pollinated
Very short answer type question:
What is hydrophily?
Choose the correct statement from the following.
From among the situations given below, choose the one that prevents both autogamy and geitonogamy.
Even in absence of pollinating agents seed-setting is assured in ______.
Which one of the following may require pollinators, but is genetically similar to autogamy?
Bird pollinated flowers are usually ______.
