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Q. No.Which one of the following is not a gaseous biogeochemical cycle in the ecosystem?
1. Sulphur cycle
2. Phosphorus cycle
3. Nitrogen cycle
4. Carbon cycle
Subtopic: Mineral Cycling & Ecosystem Services (OLD NCERT) |
76%
From NCERT
AIPMT - 2012
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Which one of the following is not a functional unit of an ecosystem?
1. Energy flow
2. Decomposition
3. Productivity
4. Stratification
Subtopic: Components & Types of Ecosystems |
87%
From NCERT
AIPMT - 2012
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Which one of the following statements is correct for secondary succession?
| 1. | It occurs on a deforested site |
| 2. | It follows primary succession |
| 3. | It is similar to primary succession except that it has a relatively slow pace |
| 4. | All of the above |
Subtopic: Ecological Succession (OLD NCERT) |
64%
From NCERT
AIPMT - 2011
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Which one of the following statements for a pyramid of energy is incorrect, whereas the remaining three are correct?
| 1. | It shows the energy content of different trophic-level organisms |
| 2. | It is inverted in shape |
| 3. | It is upright in shape |
| 4. | Its base is broad |
Subtopic: Ecological Pyramids |
89%
From NCERT
AIPMT - 2011
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Mass of living matter at a tropic level in an area at any time is called:
| 1. | Detritus | 2. | Humus |
| 3. | Standing state | 4. | Standing crop |
Subtopic: Energy Flow | Ecological Pyramids |
86%
From NCERT
AIPMT - 2011
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Of the total incident solar radiation, proportion of PAR is:
1. about 60%
2. about 50%
3. more than 80%
4. about 70%
2. about 50%
3. more than 80%
4. about 70%
Subtopic: Energy Flow |
89%
From NCERT
AIPMT - 2011
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The biomass available for consumption by the herbivores and the decomposers is called:
1. net primary productivity
2. secondary productivity
3. standing crop
4. gross primary productivity
Subtopic: Ecosystem Productivity |
71%
From NCERT
AIPMT - 2010
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Which one of the following is one of the characteristics of a biological community?
| 1. | Stratification | 2. | Natality |
| 3. | Mortality | 4. | Sex-ratio |
Subtopic: Introduction |
82%
From NCERT
AIPMT - 2010
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About 70% of total global carbon is found in:
| 1. | grasslands | 2. | agro-ecosystems |
| 3. | oceans | 4. | forests |
Subtopic: Mineral Cycling & Ecosystem Services (OLD NCERT) |
83%
From NCERT
AIPMT - 2008
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Which one of the following is not used for the construction of ecological pyramids?
| 1. | Dry weight | 2. | Number of individuals |
| 3. | Rate of energy | 4. | Fresh weight |
Subtopic: Ecological Pyramids |
70%
From NCERT
AIPMT - 2006
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