Question

About biological Nitrogen fixation.
This question is for 3 marks
For class 9th

Answer 1

There are two types of nitrogen fixation bacteria they are blue green algae and cyanobacteria . they fix nitrogen by fixing nitrogen in soil by decomposition of leaves and other things

Answer 2

bacterias are called biological nitrogen fixers as it converts the atmospheric nitrogen into usable form of salts or nitrates which is used by plants which has nitrogen deficiency