Q. No.Consider the two statements:
Statement I:
Entire biosphere is regarded as a global ecosystem by many ecologists.
Statement II:
The global ecosystem is divided into terrestrial and aquatic ecosystem for convenience.
1.
Only Statement I is correct.
2.
Only Statement II is correct.
3.
Both Statement I and Statement II are correct.
4.
Both Statement I and Statement II are incorrect.
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
| 1. | Stratification | 2. | Scarification |
| 3. | Standing crop | 4. | Standing state |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
| Statement I: | There is unidirectional movement of energy towards the higher trophic levels and its dissipation and loss as heat to the environment. |
| Statement II: | Nutrients are never lost from the ecosystems, rather they are recycled time and again indefinitely. |
1. Only Statement I is correct.
2. Only Statement II is correct.
3. Both Statement I and Statement II are correct.
4. Both Statement I and Statement II are incorrect.
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
| Statement I: | Tropical land areas have the highest rates of production. |
| Statement II: | Oceans have low productivity. |
1. Only Statement I is correct.
2. Only Statement II is correct.
3. Both Statement I and Statement II are correct.
4. Both Statement I and Statement II are incorrect.
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
| Statement I: | The terms detritivore and decomposer describe same organisms. |
| Statement II: | Both are unable to ingest discrete lumps of matter, but instead live by absorbing and metabolizing on a molecular scale. |
1. Only Statement I is correct.
2. Only Statement II is correct.
3. Both Statement I and Statement II are correct.
4. Both Statement I and Statement II are incorrect.
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
| Assertion (A): | Most ecosystems would vanish if the sun were not, continuously, providing energy to the Earth. |
| Reason (R): | Ecosystems and living organisms defy second law of thermodynamics. |
| 1. | Both (A) and (R) are True but (R) does not explain (A). |
| 2. | (A) is True but (R) is False. |
| 3. | (A) is False but (R) is True. |
| 4. | Both (A) and (R) are True and (R) explains (A). |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
| Statement I: | No energy that is trapped into an organism remains in it forever. |
| Statement II: | All animals depend on plants [directly or indirectly] for their food requirements. |
2. Only Statement II is correct.
3. Both Statement I and Statement II are correct.
4. Both Statement I and Statement II are incorrect.
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
| Statement I: | A is primary succession and B is secondary succession. |
| Statement II: | A will be much faster in pace than B. |
2. Only Statement II is correct.
3. Both Statement I and Statement II are correct.
4. Both Statement I and Statement II are incorrect.
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
| 1 | 2 | 3 | 4 | |
| A. | Phyto- plankton |
Zoo- plankton |
Phyto- plankton |
Phyto- plankton |
| B. | Submerged plant | Submerged free floating plant |
Submerged plant | Reed swamp |
| C. | Submerged free floating plant | Reed swamp | Scrub | Submerged plant |
| D. | Reed swamp | Marsh meadow | Submerged free floating plant |
Marsh meadow |
| E. | Marsh meadow | Scrub | Reed swamp | Submerged free floating plant |
| F. | Scrub | Submerged plant |
Marsh meadow | Scrub |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
| Statement I: | Rocks are the natural reservoirs where phosphorus is present in the form of phosphates. |
| Statement II: | Minute amounts of phosphates dissolve in soil solution when rocks are weathered and are absorbed by the roots of the plants. |
| Statement III: | Herbivores and other animals obtain phosphorus from plants. |
| Statement IV: | Phosphate solubilising bacteria decompose waste products and dead organisms releasing phosphorus. |
| Statement V: | Gaseous exchange of phosphorus between organisms and environment is significant. |
| 1. | All except Statement V are correct. |
| 2. | All except Statement I and Statement V are correct. |
| 3. | Only Statement I, Statement II and Statement III are correct. |
| 4. | All Statements are correct. |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
© 2024 GoodEd Technologies Pvt. Ltd.