Question

Consider the following

1. Lightning
2. Rhizobium
3. Cyanobacteria

Which of these can help in nitrogen fixation?

• A. 1 and 2 only
• B. 1 and 3 only
• C. 1,2 and 3 only
• D. 2 and 3 only

Answer 1

The correct option is C 1,2 and 3 only

Nitrogen Fixation is a biological process in which the nitrogen gas is converted into a usable form for plants and other microbes. In this process, nitrogen in the atmosphere is converted into ammonia (another form of nitrogen) by certain bacterial species like Rhizobium, Azotobacter, etc. and by other natural phenomena.Another process which helps in nitrogen fixation is lightning. It is a natural phenomenon where the energy of lightning breaks and converts the non-absorbable form of nitrogen into a usable form.