Choose the correct statement from the following:a)Chasmogamous flowers...
Correct Answer: D
- Autogamy refers to the process where a flower is self-pollinated, ensuring fertilization without needing another flower.
- Cleistogamous flowers are self-pollinating flowers that never open, ensuring autogamy.
- Therefore, it is accurate to say that cleistogamous flowers always exhibit autogamy as they are designed to self-pollinate without the need for external agents like insects or wind.
Topic in NCERT: Cleistogamous flowers
Line in NCERT: "Cleistogamous flowers are invariably autogamous as there is no chance of cross-pollen landing on the stigma."
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Choose the correct statement from the following:a)Chasmogamous flowers...
Understanding Cleistogamous Flowers
Cleistogamous flowers are a unique type of flower that play a significant role in plant reproduction. Here’s a detailed breakdown of their characteristics and their reproductive strategies.
Definition of Cleistogamous Flowers
- Cleistogamous flowers are closed flowers that self-pollinate without opening.
- They are typically found in certain species of plants, including some legumes.
Autogamy in Cleistogamous Flowers
- Autogamy refers to self-pollination, where pollen from the same flower fertilizes its ovules.
- Cleistogamous flowers are adapted to this process as they remain closed, ensuring that self-fertilization occurs effectively.
- Since there is no opportunity for cross-pollination, these flowers inherently exhibit autogamy.
Geitonogamy and Cleistogamous Flowers
- Geitonogamy involves pollination between different flowers on the same plant.
- While cleistogamous flowers are primarily autogamous, they do not typically exhibit geitonogamy due to their closed structure.
Conclusion
- The correct statement is that cleistogamous flowers always exhibit autogamy.
- This characteristic ensures that these flowers can reproduce successfully, even in environments where pollinators may be scarce or absent.
In summary, cleistogamous flowers are a fascinating example of plant adaptation, showcasing the efficiency of self-pollination through their closed floral structure.