CSS :: Ecology and General Silviculture
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For students in search of
- Hydroponic Gardening
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Guides - Basics to Experts level
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Growing fruit and vegetables hydroponically
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Practical daily questions or queries of hydroponics lovers
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Current Hydroponics and Indoor Gardening Market Growth as well as Trends
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51. |
Ecosystem creates: |
A. |
Food chains |
B. |
Food web |
C. |
Both (a) & (b) |
D. |
None of the above |
Answer: Option C
Explanation:
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52. |
The primary productivity is minimum in the following ecosystem: |
A. |
Tropical rainforest |
B. |
Temperate grassland |
C. |
Tropical deciduous forest |
D. |
Desert shrub |
Answer: Option D
Explanation:
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53. |
What is contributed from the outer space in an ecosystem? |
A. |
All the atmospheric gases |
B. |
Only carbon, hydrogen and oxygen |
C. |
Energy only |
D. |
All the above components |
Answer: Option C
Explanation:
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54. |
Which one of the following is a reversible source of energy? |
A. |
Petroleum |
B. |
Coal |
C. |
Nuclear fuel |
D. |
Trees |
Answer: Option C
Explanation:
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55. |
Ecological pyramids are of: |
A. |
Two types |
B. |
Three types |
C. |
Four types |
D. |
Five types |
Answer: Option B
Explanation:
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56. |
The cycling of elements in an ecosystem is called: |
A. |
Chemical cycle |
B. |
Biogeochemical cycle |
C. |
Geological cycle |
D. |
Geochemical cycle |
Answer: Option B
Explanation:
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57. |
The zooplanktonic forms are: |
A. |
Primay consumers |
B. |
Secondary consumers |
C. |
Carnivores |
D. |
Primary producers |
Answer: Option A
Explanation:
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58. |
The number of producers and consumers in an ecosystem is mutually controlled by a: |
A. |
Productivity control |
B. |
Food chain mechanism |
C. |
Feed back mechanism |
D. |
Any of these |
Answer: Option C
Explanation:
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59. |
In an ecosystem, the population of: |
A. |
Primary producers is larger than that of primary consumers |
B. |
Secondary consumers is the largest because they are the most powerful |
C. |
Primary consumers outnumber primary producers |
D. |
Primary consumers is the least dependant upon primary producers |
Answer: Option A
Explanation:
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60. |
When a big fish eats a small fish, which easts water-fleas supported by phytoplankton, the water leas are: |
A. |
Primary consumers |
B. |
Producers |
C. |
Secondary consumers |
D. |
Top consumers in this food chain |
Answer: Option A
Explanation:
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