Question

State the role of symbiotic bacteria ij nitrogen cycle in nature.​

Answer 1

Answer:

Nitrification or nitrogen fixation

ex:-rhizobium

(short answer becaused you asked in one word)

some bacteria and blue-green algae, fix the atmospheric nitrogen into soil and increase the fertility of soil.

They are called biological nitrogen fixers.

One such bacterium isRhizobium,which is found in the root nodules of leguminous plants.

It lives in symbiotic association with plants and fixes the atmospheric nitrogen in leguminous plants.

Explanation:

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Answer 2

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The symbiotic nitrogen-fixing bacteria invade the root hairs of host plants, where they multiply and stimulate formation of root nodules, enlargements of plant cells and bacteria in intimate association. Within the nodules the bacteria convert free nitrogen to ammonia, which the host plant utilizes for its development.