1.
Oxidation of ammonia or ammonium ions by bacteria in soil is called

2.
Gross primary production is

3.
Plant biomass is

4.
Total solar energy trapped by the producers in an ecosystem is

5.
The major unit of ecology is

6.
Eco' part of word ecosystem means

7.
Which of the following is not true for food web?

8.
Which one of the following is more tolerant to herbivore

9.
Which of the following step of nitrogen cycle is not useful for plants