Question

Biological Nitrogen fixers

a) Able to fix nitrogen into salts of nitrogen
b) Able to fix nitrogen into usable forms
c) Able to convert nitrogen into nitrates
d) Able to convert nitrogen into nitrates only

• A. a, b, c
• B. a, c
• C. b, c
• D. a, b

Answer 1

The correct option is D a, b

Some bacteria and cyanobacteria and able to fix atmosphere nitrogen into simple absorbable forms for plants.