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If the gynoecium is present in the top most position of the thalamus, the flower is referred to as
- a)hypogynous
- b)perigynous
- c)epigynous
- d)none of these
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
If the gynoecium is present in the top most position of the thalamus, ...
In hypogynous condition of flowers, the thalamus is convex or conical. Gynoecium occupies the topmost (superior) position at the thalamus and other parts of flower are borne successively below. Androperianth or other floral organs are inferior, e.g, Hibiscus rosa sinensis, Ranunculus, etc.
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If the gynoecium is present in the top most position of the thalamus, ...
Understanding Gynoecium Positioning in Flowers
In flowering plants, the arrangement of reproductive structures is crucial for classification. The position of the gynoecium (the female reproductive part) relative to other floral parts helps determine the type of flower.
Types of Floral Structures
- Hypogynous Flowers:
- In hypogynous flowers, the gynoecium is positioned at the top of the thalamus (the receptacle), and other floral organs (sepals, petals, and stamens) are located below it.
- This arrangement is significant because it allows the ovary to be superior, meaning it is not surrounded by other parts.
- Perigynous Flowers:
- Here, the gynoecium is also above the other floral parts, but they are positioned in a cup-like structure, forming a floral tube.
- This results in a semi-inferior ovary.
- Epigynous Flowers:
- In epigynous flowers, the gynoecium is located below the other floral organs, leading to an inferior ovary.
Conclusion
In summary, the correct classification for a flower with the gynoecium at the topmost position is hypogynous. This positioning is essential for the development and function of the flower, influencing pollination and fertilization processes. Understanding these classifications aids in the study of plant biology, especially for NEET aspirants.
In flowering plants, the arrangement of reproductive structures is crucial for classification. The position of the gynoecium (the female reproductive part) relative to other floral parts helps determine the type of flower.
Types of Floral Structures
- Hypogynous Flowers:
- In hypogynous flowers, the gynoecium is positioned at the top of the thalamus (the receptacle), and other floral organs (sepals, petals, and stamens) are located below it.
- This arrangement is significant because it allows the ovary to be superior, meaning it is not surrounded by other parts.
- Perigynous Flowers:
- Here, the gynoecium is also above the other floral parts, but they are positioned in a cup-like structure, forming a floral tube.
- This results in a semi-inferior ovary.
- Epigynous Flowers:
- In epigynous flowers, the gynoecium is located below the other floral organs, leading to an inferior ovary.
Conclusion
In summary, the correct classification for a flower with the gynoecium at the topmost position is hypogynous. This positioning is essential for the development and function of the flower, influencing pollination and fertilization processes. Understanding these classifications aids in the study of plant biology, especially for NEET aspirants.
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If the gynoecium is present in the top most position of the thalamus, the flower is referred to asa)hypogynousb)perigynousc)epigynousd)none of theseCorrect answer is option 'A'. Can you explain this answer?
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