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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
Make a list of any three outbreeding devices that flowering plants have developed and explain how they help to encourage cross-pollination.
Write two ways in which pollination may occur in plants.
Compare the characteristic features of insect pollinated and wind pollinated flowers. Explain how the respective features assist in pollination.
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.
Fill in the blanks with suitable words.
_______ is a water-pollinated flower.
From among the situations given below, choose the one that prevents both autogamy and geitonogamy.
Which of these is a condition that makes flowers invariably autogamous?
Pollination refers to the ______.
Advantage of cleistogamy is:
Autogamy can occur in a chasmogamous flower if ______.
