Answer:
The above statement is false.
Explanation:
Protozoans are not the organisms that can convert nitrogen from the air into chemical compounds that plants can use.
Bacteria and archaea are organisms that can convert nitrogen from the air into chemical compounds that plants can use. Organisms which can convert nitrogen to forms that can be used by plants such as ammonia are known as diazotrophs. Examples of such kind of organisms include Rhizobia and azospirillium.