| 1 |
------------ is use for the cleaning of sewage water. |
- A. Bacteria
- B. Virus
- C. Algae
- D. Fungi
|
| 2 |
Which of the following is not an example of green house gas? |
- A. CO<sub>2</sub>
- B. Methane
- C. Oxygen
- D. Nitrous oxide
|
| 3 |
The consumersthat eat animal flesh as well as plants and plant products are called: |
- A. Herbivors
- B. Carnivores
- C. Omnivores
- D. Insectivores
|
| 4 |
Which of the following air pollutant react with water in atmosphere producing acid rain? |
- A. Hydrocarbons fluorine
- B. Flyash, soot
- C. chlorine , smoke
- D. Sulphur dioxide, Nitrogen oxide.
|
| 5 |
Organisms in the ecosystem that are responsible for recycling of plant and animal wastes are. |
- A. Producers
- B. Consumers
- C. Decomposers
- D. Competitors
|
| 6 |
During nitrogen fixation nitrogen is converted into: |
- A. Nitrates
- B. nitrates
- C. ammonia
- D. all to these
|
| 7 |
Identify the correctly matched pair. |
- A. Rainfall-biotic factor in Ecosystem
- B. Corn-secondary consumers
- C. Global warming fossil fuel formating
- D. Renewable natural resource air
|
| 8 |
Which of the following organisms are decomposers? |
- A. Fungi
- B. Algae
- C. Bacteria
- D. Both a and c
|
| 9 |
The utilization of nitrates by organisms is called. |
- A. Nitrification
- B. Ammonification
- C. Assimilation
- D. Denitrification
|
| 10 |
Which of the following is the abiotic part of ecosystem. |
- A. Grass
- B. Goat
- C. <div>Lion</div>
- D. Soil
|
