| 1 |
The zone, rich in life, in a fresh water lake is called. |
- A. Littoral zone
- B. Profundal zone
- C. Limnetic zone
- D. Deseret
|
| 2 |
What will be the age of willow tree 10 centimeter long and 70 centimeter in diameter |
- A. 40 years
- B. 50 years
- C. 60 years
- D. 70 years
|
| 3 |
A form of air pollution in which airbone acids produced by electric utility plants and other sources fall to Earth in distant regions is |
- A. Acid rain
- B. Basic rain
- C. Heavy rain
- D. Drizzling
|
| 4 |
Modern man is called |
- A. Homo erectus
- B. Homo habilis
- C. Homo sapiens
- D. Homo neanderthalensis
|
| 5 |
The biome, which has very fertile soil, rich in organic matter with maximum water holding capacity is. |
- A. Alpine forest
- B. Grassiland
- C. Desert
- D. Temperate deciduous forest
|
| 6 |
In spermatophytes important step in land adaptation is the evolution. |
- A. Seed coat
- B. Fruit
- C. Pollen tube
- D. Flower
|
| 7 |
Which of the following is the most fragile ecosystem. |
- A. Grass land
- B. Wood land
- C. Tundra
- D. Savanna
|
| 8 |
Here, light is insufficient to support photosynthesis. |
- A. Littoral zone
- B. Profundal zone
- C. Limetic zone
- D. Photoplankton zone
|
| 9 |
The best way to increase food production from ecosystem view point is: |
- A. To increase cultivable land by clearing forest
- B. Use of excessive fertilizers
- C. Use of high quality pesticides
- D. Use of genetically improved varieties of seeds
|
| 10 |
The total energy from the sun is happened by the producers in an ecosystem is about? |
- A. 20 %
- B. 10 %
- C. 5 %
- D. 1 %
|