Statement I: | The primary source of energy in an ecosystem is solar energy. |
Statement II: | The rate of production of organic matter photosynthesis in an ecosystem is called net primary productivity (NPP). |
1. | Statement I is correct but statement II is incorrect |
2. | Statement I is incorrect but statement II is correct |
3. | Both statement I and statement II are correct |
4. | Both statement I and statement II are incorrect |
Statement I: | In ecosystem, there is unidirectional flow of energy of sun from producers to consumers. |
Statement II: | Ecosystems are exempted from 2nd law of thermodynamics. |
1. | Statement I is correct but statement II is incorrect |
2. | Statement I is incorrect but statement II is correct |
3. | Both statement I and statement II are correct |
4. | Both statement I and statement II are incorrect |
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. | \(\dfrac{ 1000 }{10}~\text J\) | 2. | \(\dfrac{ 1000}{10} \times 4~\text J \) |
3. | \(10,000~\text J\) | 4. | \(10,00,000~\text J \) |
1. | Detritus | 2. | Humus |
3. | Standing state | 4. | Standing crop |
Percentage of energy transferred to the higher tropic level in a food chain is:
1. | 1% | 2. | 10% |
3. | 90% | 4. | 100% |