Question:
The innermost layer of pollen wall, intine is made of :
The innermost layer of pollen wall, intine is made of :
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Pollen wall: Exine → Sporopollenin (outer), Intine → Cellulose (inner).
Updated On: May 18, 2026
- Cellulose
- Sporopollenin
- Protein
- Colonnade
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The Correct Option is A
Solution and Explanation
Concept:
The pollen grain wall consists of two main layers: the outer exine and the inner intine. Each layer has a distinct composition and function.
Step 1: Understanding pollen wall structure.
• Exine – Outer layer, made of sporopollenin (very resistant).
• Intine – Inner layer, softer and composed mainly of cellulose.
Step 2: Role of intine.
The intine supports the pollen grain internally and plays a role in pollen tube formation during fertilization.
Step 3: Evaluating options.
• Cellulose – Correct, main component of intine.
• Sporopollenin – Component of exine, not intine.
• Protein – Not primary structural material.
• Colonnade – Structural term, not a substance.
Step 4: Final evaluation.
Thus, cellulose is the correct component of the intine layer. Final Conclusion:
Hence, the correct answer is option (1).
Step 1: Understanding pollen wall structure.
• Exine – Outer layer, made of sporopollenin (very resistant).
• Intine – Inner layer, softer and composed mainly of cellulose.
Step 2: Role of intine.
The intine supports the pollen grain internally and plays a role in pollen tube formation during fertilization.
Step 3: Evaluating options.
• Cellulose – Correct, main component of intine.
• Sporopollenin – Component of exine, not intine.
• Protein – Not primary structural material.
• Colonnade – Structural term, not a substance.
Step 4: Final evaluation.
Thus, cellulose is the correct component of the intine layer. Final Conclusion:
Hence, the correct answer is option (1).
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