Question

What type of organism converts nitrogen into a usable form for plants?
A) bacteria
B) earthworms
C) fungus
D) mold

Answer 1

I think it is bacteria

Answer 2

Answer : The correct option is (A) Bacteria.

Explanation :

The nitrogen is converted into ammonia with the help of nitrogen fixing bacteria which are present in association with the roots of some plants.

Ammonia can be utilized in protein formation which is used as nutrient for the plant growth.

Example of nitrogen fixing bacteria is Nostoc.