Question

microorganisms play a major role in cycling of nitrogen (say true or false)​

Answer 1

$\huge\fcolorbox{cyan}{black}{True}$

Bacteria play a key role in the nitrogen cycle.

Some species of nitrogen-fixing bacteria are free-living in soil or water, while others are beneficial symbionts that live inside of plants. ... Ammonia, nitrites, and nitrates are all fixed nitrogen and can be absorbed by plants.