Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) General Knowledge Ecology and Environment Ecology and Functions of an ecosystem
Consider the following statements regarding the nitrogen cycle:
1. Nitrogen in gaseous form can be used by all living organisms.
2. Nitrogen can be fixed in the atmosphere by lightning and cosmic radiation.
3. Bacteria can convert nitrates into free nitrogen.
Which of the statements given above is/are correct?
1
1 and 2 only
2
2 only
3
2 and 3 only
4
1, 2 and 3