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Ovule in gymnosperm is generally : -
- a)Anatropous and bitegmic
- b)Orthotropous and bitegmic
- c)Anatropous and unitegmic
- d)Orthotropous and unitegmic
Correct answer is option 'D'. Can you explain this answer?
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Ovule in gymnosperm is generally : -a)Anatropous and bitegmicb)Orthotr...
An integument is a protective cell layer surrounding the ovule. Gymnosperms typically have one integument (unitegmic) while angiosperms typically have two (bitegmic). The integuments develop into the seed coat when the ovule matures after fertilization.
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Ovule in gymnosperm is generally : -a)Anatropous and bitegmicb)Orthotr...
Understanding Ovules in Gymnosperms
In gymnosperms, the ovule plays a crucial role in reproduction. The characteristics of ovules can vary, but they are generally classified based on their orientation and integument structure.
Types of Ovules
- Anatropous: The ovule is inverted, where the micropyle (opening) is positioned near the hilum (attachment point).
- Orthotropous: The ovule is straight, and the micropyle is aligned with the hilum.
Integument Structure
- Bitegmic: The ovule has two integuments (layers of protective tissue).
- Unitegmic: The ovule has a single integument.
Correct Classification in Gymnosperms
The correct answer is Orthotropous and Unitegmic. Here's why:
- Orientation: Gymnosperms typically exhibit orthotropous ovules, which means they maintain a straight orientation. This arrangement allows for efficient fertilization and seed development.
- Integument: Most gymnosperms possess unitegmic ovules, characterized by a single integument surrounding the ovule. This structure is sufficient for the protection and development of the ovule.
Conclusion
In summary, gymnosperms predominantly have ovules that are orthotropous and unitegmic. This classification is essential for understanding their reproductive strategies and developmental biology. Recognizing these characteristics aids in the overall comprehension of gymnosperm reproduction, especially for examinations like NEET.
In gymnosperms, the ovule plays a crucial role in reproduction. The characteristics of ovules can vary, but they are generally classified based on their orientation and integument structure.
Types of Ovules
- Anatropous: The ovule is inverted, where the micropyle (opening) is positioned near the hilum (attachment point).
- Orthotropous: The ovule is straight, and the micropyle is aligned with the hilum.
Integument Structure
- Bitegmic: The ovule has two integuments (layers of protective tissue).
- Unitegmic: The ovule has a single integument.
Correct Classification in Gymnosperms
The correct answer is Orthotropous and Unitegmic. Here's why:
- Orientation: Gymnosperms typically exhibit orthotropous ovules, which means they maintain a straight orientation. This arrangement allows for efficient fertilization and seed development.
- Integument: Most gymnosperms possess unitegmic ovules, characterized by a single integument surrounding the ovule. This structure is sufficient for the protection and development of the ovule.
Conclusion
In summary, gymnosperms predominantly have ovules that are orthotropous and unitegmic. This classification is essential for understanding their reproductive strategies and developmental biology. Recognizing these characteristics aids in the overall comprehension of gymnosperm reproduction, especially for examinations like NEET.
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Ovule in gymnosperm is generally : -a)Anatropous and bitegmicb)Orthotropous and bitegmicc)Anatropous and unitegmicd)Orthotropous and unitegmicCorrect answer is option 'D'. Can you explain this answer?
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