MCQ
A free living nitrogen$-$fixing cyanobacterium which can also form symbiotic association with the water fern Azolla is:
- AChlorella.
- BTolypothrix.
- CNostoc.
- ✓Anabaena.
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| List $I$ | List $II$ |
| $A$. Oxidative decarboxylation | $I$. Citrate synthase |
| $B$. Glycolysis | $II$. Pyruvate dehydrogenase |
| $C$. Oxidative phosphorylation | $III$. Electron transport system |
| $D$. Tricarboxylic acid cycle | $IV$. $EMP$ pathway |
Choose the correct answer from the options given below :