Question:
The figure given below is T.S. of {Azolla leaf, the filaments present in the cavity of the leaf are of _________
The figure given below is T.S. of {Azolla leaf, the filaments present in the cavity of the leaf are of _________
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{Azolla + Anabaena} is a classic example of symbiotic nitrogen fixation.
Updated On: Mar 6, 2026
- Nostoc
- Tolypothrix
- Anabaena
- Oscillatoria
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the structure of Azolla leaf.
Azolla is an aquatic fern that has a symbiotic association with a nitrogen-fixing cyanobacterium present in cavities of its leaf.
Step 2: Identifying the symbiotic organism.
The leaf cavities of Azolla contain filaments of Anabaena azollae, which fix atmospheric nitrogen and provide it to the plant.
Step 3: Conclusion.
Thus, the filaments present in the cavity of Azolla leaf are of Anabaena.
Azolla is an aquatic fern that has a symbiotic association with a nitrogen-fixing cyanobacterium present in cavities of its leaf.
Step 2: Identifying the symbiotic organism.
The leaf cavities of Azolla contain filaments of Anabaena azollae, which fix atmospheric nitrogen and provide it to the plant.
Step 3: Conclusion.
Thus, the filaments present in the cavity of Azolla leaf are of Anabaena.
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