Question

Nitrogen present in the air is converted into ________ by ________ so that it can be utilised by plants.

• A. nitrates
• B. microorganisms

Answer 1

1. Plants cannot use nitrogen directly from the air.
2. They cannot convert them into a usable form.
3. Microorganisms like some bacteria and certain blue-green algae convert atmospheric nitrogen into nitrates.
4. This process is called nitrogen fixation.

Final answer: Nitrogen present in the air is converted into nitrates by microorganisms so that it can be utilised by plants.