MCQOPTIONS
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| 1. |
Nostoc fixes dinitrogen in symbiotic association with the following :I. AlnusII. GunneraIII. AnthocerosIV. CasuarinaThe correct combination is ? |
| A. | I and II |
| B. | I and III |
| C. | II and III |
| D. | I and IV |
| Answer» D. I and IV | |