| 1 |
The amount of energy left plants have met their respiratory needs is net eprimary production , which shows up as plant: |
- A. Respiration rate
- B. Photosynthesis
- C. Biomass
- D. Food reserve
|
| 2 |
In Sindh, the desert ecosystem is called. |
- A. Thar
- B. Sahara
- C. Gobi
- D. thal
|
| 3 |
Northern coniferous forest are called. |
- A. Alpine
- B. Boreal
- C. Taiqa
- D. Prairles
|
| 4 |
In aquatic ecosystem , near shore zone is called. |
- A. Limnetic zone
- B. Littoral zone
- C. Profundal zone
- D. Benthic zone
|
| 5 |
As CFC<sub>s</sub> rise to the atmosphere ultraviolet rays release |
- A. Fluorine
- B. Chlorine
- C. Carbon
- D. Hydrogen
|
| 6 |
The productivity of aquatic ecosystem is determined by light and |
- A. CO2
- B. Temperature
- C. Nutrients
- D. Water
|
| 7 |
Lavering is the characteristic of. |
- A. Tundra
- B. Desert
- C. Grass land
- D. Talga
|
| 8 |
Desert ecosystem of Bhakkar and Mian wali is called. |
- A. Thal
- B. Thar
- C. Cholistan
- D. Rohi
|
| 9 |
Which of the following is NOT recycled in ecosystem? |
- A. Carbon
- B. Sulphur
- C. Energy
- D. Water
|
| 10 |
Water used for industrial purposes is about |
- A. 9%
- B. 90%
- C. 70%
- D. 50%
|