| 1 |
In coniferous forest region plants: |
- A. Become mature in limited period
- B. Become mature within 50 to 60 years
- C. Become mature within 10 years
- D. Growth is very fast
|
| 2 |
In the thickly populated areas of the world |
- A. Natural vegetation is thick
- B. Vegetation covers 80% earth surface
- C. Natural vegetation covers limited area
- D. Natural vegetation is absent
|
| 3 |
With the increase of temperature evaporation from plants |
- A. Becomes fast
- B. Becomes slow
- C. Becomes very slow
- D. Becomes at zero level
|
| 4 |
According to latest estimates |
- A. 90% land surface is under forests
- B. Natural vegetation has absolutely finished
- C. Only 10% area is under forests
- D. 25 to 30% land surface is under forests
|
| 5 |
Plants obtain from air: |
- A. Carbon dioxide
- B. Nitrogen
- C. Water
- D. Mineral particles
|
| 6 |
In equatorial rain-fed forests due to heavy rainfalls |
- A. Soil is very fertile
- B. Fertile soils are limited
- C. Clayey soils are found
- D. Sandy soils are found
|
| 7 |
World's evergreen rain-fed equatorial forests covers: |
- A. 10% area of the total forests
- B. 5% area of the total forests
- C. 49% area of the total forests
- D. 95% area of the total forests
|
| 8 |
With the increase of temperature evaporation from plants: |
- A. Becomes fast
- B. Becomes slow
- C. Become very slow
- D. Become at zero level
|
| 9 |
In equatorial rain-fed forests region annual rainfall is: |
- A. Very less
- B. More than 80 inches
- C. Very meagre
- D. Up to 30 inches
|
| 10 |
From Brazil and Congo's forests: |
- A. Gold is obtained
- B. Petroleum is obtained
- C. Rubber is obtained
- D. Olive is obtained
|
