- 1(current)
Q. No.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 |
90%
From NCERT
AIPMT - 2011
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NEET 2025 - Target Batch
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NEET 2025 - Target Batch
Approximately how much of the solar energy that falls on the leaves of the plant is converted to chemical energy by photosynthesis?
1. Less than 1%
2. 2-10%
3. 30%
4. 50%
Subtopic: Energy Flow |
71%
From NCERT
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If the carbon atoms fixed by producers already have passed through three species, the trophic level of the last species would be
1. scavenger
2. tertiary producer
3. tertiary consumer
4. secondary consumer
Subtopic: Energy Flow |
73%
From NCERT
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Percentage of energy transferred to the higher tropic level in a food chain is:
1. 1%
2. 10%
3. 90%
4. 100%
Subtopic: Energy Flow |
93%
From NCERT
AIPMT - 1999
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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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NEET 2025 - Target Batch
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In an ecosystem, if the Net Primary Productivity (NPP) of first trophic level is \(100 x\left(\mathrm{kcal} ~\mathrm{m}^{-2}\right) \mathrm{yr}^{-1},\) what would be the GPP (Gross Primary Productivity) of the third trophic level of the same ecosystem?
1. \(x\left(\mathrm{kcal}~ \mathrm{m}^{-2}\right) y r^{-1}\)
2. \(10 x\left(\mathrm{kcal} ~\mathrm{m}^{-2}\right) \mathrm{yr}^{-1}\)
3. \(\dfrac{100 x}{3 x}\left(\mathrm{kcal} ~\mathrm{m}^{-2}\right) \mathrm{yr}^{-1}\)
4. \(\dfrac{x}{10}\left(\mathrm{kcal} ~\mathrm{m}^{-2}\right) y r^{-1}\)
1. \(x\left(\mathrm{kcal}~ \mathrm{m}^{-2}\right) y r^{-1}\)
2. \(10 x\left(\mathrm{kcal} ~\mathrm{m}^{-2}\right) \mathrm{yr}^{-1}\)
3. \(\dfrac{100 x}{3 x}\left(\mathrm{kcal} ~\mathrm{m}^{-2}\right) \mathrm{yr}^{-1}\)
4. \(\dfrac{x}{10}\left(\mathrm{kcal} ~\mathrm{m}^{-2}\right) y r^{-1}\)
Subtopic: Ecosystem Productivity | Energy Flow |
From NCERT
NEET - 2024
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- 1(current)
Q. No.
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