Question:
The outer thick layer of microspore is made up of -------------.
The outer thick layer of microspore is made up of -------------.
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The thick outer exine of pollen is made of sporopollenin, an extremely resistant substance.
Updated On: Nov 12, 2026
- cellulose
- pectin
- sporopollenin
- hemicellulose
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept
The wall of a microspore (pollen grain) has two layers, the outer exine and the inner intine.
Step 2: Composition
The exine is thick and made of sporopollenin, which resists high temperature, strong acids, alkalis and enzymes.
The thin intine is made of cellulose and pectin.
Step 3: Conclusion
The outer thick layer is made of sporopollenin.
Final Answer:
The outer layer is made of sporopollenin. \[ \boxed{\text{(C) }\text{sporopollenin}} \]
The wall of a microspore (pollen grain) has two layers, the outer exine and the inner intine.
Step 2: Composition
The exine is thick and made of sporopollenin, which resists high temperature, strong acids, alkalis and enzymes.
The thin intine is made of cellulose and pectin.
Step 3: Conclusion
The outer thick layer is made of sporopollenin.
Final Answer:
The outer layer is made of sporopollenin. \[ \boxed{\text{(C) }\text{sporopollenin}} \]
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