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Which of the following statement is corr...

Which of the following statement is correct

A

Chasmogamous flowers always exhibit geitonogamy

B

Cleistogamous flowers always exhibit autogamy

C

Chasmogamous flowers never exhibit autogamy

D

Cleistogamous flowers exhibit both autogamy and geitonogamy.

Text Solution

AI Generated Solution

The correct Answer is:
To determine which statement is correct regarding Chasmogamous and Clistogamous flowers, we can analyze each statement step by step. ### Step-by-Step Solution: 1. **Understanding Chasmogamous Flowers**: - Chasmogamous flowers are those that open and allow for the possibility of cross-pollination. They can exhibit different types of pollination including autogamy (self-pollination) and xenogamy (cross-pollination with another plant). - **Hint**: Remember that chasmogamous flowers have the ability to open, allowing for various pollination methods. 2. **Analyzing the First Statement**: - The first statement claims that Chasmogamous flowers always exhibit Getanogamy (which is a form of self-pollination). This is incorrect because they can also exhibit xenogamy. - **Hint**: Check the definitions of the pollination types to see if they allow for multiple methods. 3. **Understanding Clistogamous Flowers**: - Clistogamous flowers are closed flowers that do not open. They primarily exhibit autogamy since they cannot cross-pollinate due to their closed structure. - **Hint**: Focus on the structure of the flower to understand its pollination capabilities. 4. **Analyzing the Second Statement**: - The second statement claims that Clistogamous flowers always exhibit autogamy. This is correct because they do not open to allow for cross-pollination. - **Hint**: Consider how the flower's physical characteristics influence its pollination strategy. 5. **Analyzing the Third Statement**: - The third statement claims that Chasmogamous flowers never exhibit autogamy. This is incorrect because they can indeed self-pollinate. - **Hint**: Revisit the definitions of the flower types and their capabilities. 6. **Analyzing the Fourth Statement**: - The fourth statement claims that Clistogamous flowers exhibit both autogamy and Getanogamy. This is incorrect because they cannot exhibit Getanogamy due to their closed nature. - **Hint**: Remember that closed flowers have limited options for pollination. ### Conclusion: After analyzing all statements, the correct answer is that the second statement is correct: **Clistogamous flowers always exhibit autogamy.**
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DINESH PUBLICATION ENGLISH-NO IDEA-Brain Teasers
  1. Which of the following statement is correct

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  2. A structure present in the ovule as well as eggs of birds is

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  3. A plant in which fertilization occurs after the shedding of seed is

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  4. In ovule, exostome is

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  5. Group of specialized thickened nucellar cells between embryo sac and c...

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  6. Hypostase is meant for providing

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  7. A group of specialised nucellar cells between embryo sac and micropyle...

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  8. Sasa paniculata contains a large number of antipodal cells. The number...

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  9. Antipodal cells enlarge tremendously in (a) Sasa (b) Caltha (c) Ac...

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  10. Which one develops from funicle of base of ovule? (a) Sarcotesta (b) ...

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  11. Which one develops from exostome

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  12. In tenuinucellate ovules, the nucellus may break down. The nourishment...

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  13. Endothelium develops from (a) Nucellus (b) Nucellus surrounding embr...

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  14. Middle layers of pollen sac wall are absent in

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  15. Growth of pollen tube is

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  16. The apical growing region of pollen tube is called

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  17. Functional part of pollen tube is separated from the rest by

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  18. Pollen tube cytoplasm is like any other living cell in showing (a) Cal...

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  19. Male nucleus fuses with female nucleus during fertilization in Angiosp...

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  20. Which one is true of male gamete of angiosperms

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  21. Heterofertilization is

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