| 1 |
Air is being polluted rapidly due to |
- A. Industrialization
- B. Automobiles
- C. Sewage
- D. Both a & b
|
| 2 |
The zone, rich in life, in a fresh water lake is called. |
- A. Littoral zone
- B. Profundal zone
- C. Limnetic zone
- D. Deseret
|
| 3 |
The productivity of aquatic ecosystem is determined by light and |
- A. CO2
- B. Temperature
- C. Nutrients
- D. Water
|
| 4 |
Coniferous forest located at high attitude are called. |
- A. Boreal
- B. Alpine
- C. Talga
- D. Prailes
|
| 5 |
The decline in thickness of the ozone layer is caused by increasing level of |
- A. Chlorofluorocarbon
- B. Nitrogen
- C. Chlorine
- D. Carbon dioxide
|
| 6 |
Here, light is insufficient to support photosynthesis. |
- A. Littoral zone
- B. Profundal zone
- C. Limetic zone
- D. Photoplankton zone
|
| 7 |
Perhaps the most fragile of all the biomes, because of its short growing season is. |
- A. Tundra
- B. Desert
- C. Grass land
- D. Temperate deciduous forest
|
| 8 |
The earth surface covered with water is |
- A. 35%
- B. 11%
- C. 21%
- D. 33%
|
| 9 |
Ecosystem present on land or soil is called. |
- A. Terrestrial
- B. Atmosphere
- C. Lithosphere
- D. Both a and c
|
| 10 |
Mountain of Karakoram are located in major terrestrial ecosystem in Pakistan. |
- A. Grass land
- B. tundra
- C. Coniferous alpine forest
- D. Temperate deciduous forest
|