CSS :: Population Biotic Community
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51. |
The community which begins succession in a habitat is designated as: |
A. |
Seral community |
B. |
Biotic community |
C. |
Pioneer community |
D. |
Ecosere |
Answer: Option C
Explanation:
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52. |
Which of the following is not a primary coloniser? |
A. |
Blue-green algae |
B. |
Viruses |
C. |
Lichens |
D. |
Mosses |
Answer: Option B
Explanation:
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53. |
A succession exhibiting changes in the communities at a place is described as: |
A. |
Biotic succession |
B. |
Physiographic succession |
C. |
Climatic succession |
D. |
Geographic succession |
Answer: Option A
Explanation:
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54. |
The nature of a climax community depends upon: |
A. |
Water factor |
B. |
Temperature |
C. |
Soil fertility |
D. |
Climate |
Answer: Option D
Explanation:
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55. |
During ecological succession from pioneers to climax community the biomass of vegetation: |
A. |
Increases, then decreases |
B. |
Remains constant |
C. |
Decreases continuously |
D. |
Increases continuously |
Answer: Option D
Explanation:
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56. |
Which one is called amphibious plant? |
A. |
Polygonum |
B. |
Casuarina |
C. |
Wolffia |
D. |
None of these |
Answer: Option A
Explanation:
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57. |
The last stage of plant succession is: |
A. |
Ecotone |
B. |
Climax stage |
C. |
Seral community |
D. |
Ecotype |
Answer: Option B
Explanation:
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58. |
In an aqueous environment, the microscopic animals are collectively called: |
A. |
Herbivores |
B. |
Carnivores |
C. |
Planktons |
D. |
Fauna and flora |
Answer: Option C
Explanation:
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59. |
The primary succession refers to the development of communities on a: |
A. |
Freshly cleared crop field |
B. |
Forest clearing after devastating fire |
C. |
Pons, freshly filled water after a dry phase |
D. |
Newly-exposed habitat with no record of earlier vegetation |
Answer: Option D
Explanation:
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60. |
A place was rocky and barren but now there is a green forest; the sequence of origin is: |
A. |
Lichen, mos, herbs, shrubs |
B. |
Moss, lichen, herbs, shrubs |
C. |
Lichen, moss, shrubs, herbs |
D. |
Shrubs, herbs, moss, lichen |
Answer: Option A
Explanation:
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