Question : We find that Rhizobium forms nodules on the roots of leguminous plants. Also Frankia anothermicrobe forms nitrogen fixing nodules on the roots of non-leguminous plant Alnus. (a) can we artifically induce the property of nitrogen fixation in a plant, leguminous or non leguminous (b) What kind of relationship is observed between mycorrhiza and pine trees? (c ) Is it necessary for a microbe to be in close association with a plant to provide mineral nutrition. Explain with the help of one example.

Question : We find that Rhizobium forms nodules on the roots of legumi

1.	Question : We find that Rhizobium forms nodules on the roots of leguminous plants. Also Frankia anothermicrobe forms nitrogen fixing nodules on the roots of non-leguminous plant Alnus. (a) can we artifically induce the property of nitrogen fixation in a plant, leguminous or non leguminous (b) What kind of relationship is observed between mycorrhiza and pine trees? (c ) Is it necessary for a microbe to be in close association with a plant to provide mineral nutrition. Explain with the help of one example.
Answer» Solution :(a) Scientist adopted ARTIFICIAL methods in LEGUMINOUS and non leguminous but their rate is very low because genetic behaviour PLAYS a definite role in this process. (b) Pine and MYCORRHIZA both are symbiotic. Both are beneficiary to each other. ( c) There should be close relation between micro organism and plants eg. Rhizobium enters into root and associates with root tissue, at that time only it can help in nitrogen FIXATION.