NEET2017BotanyChapterActual
Select the mismatch:
Options
- AF r a n k i a - A l n u s
- BR h o d o s p i r i l l u m - M y c o r r h i z a
- CA n a b a e n a - N i t r o g e n f i x e r
- DR h i z o b i u m - A l f a l f a
Correct answer
B. R h o d o s p i r i l l u m - M y c o r r h i z a
Step-by-step solution
Amongst the given options Rhodospirillum - mycorrhiza is mismatched. Rhodospirillum is anaerobic, free-living nitrogen fixer. Mycorrhiza is a symbiotic relationship between fungi and roots of higher plants. Anabaena is a cyanobacteria which can fix atmospheric nitrogen. Rhizobium is a symbiotic bacterium with leguminous plants which helps Nitrogen fixation. Frankia is also another cyanobacteria which is associated with Alnus and helps in nitrogen fixation.