Methodical recommendation:
Theory
| Number | Name | Description |
|---|---|---|
| 1. | Revision | |
| 2. | Human impacts and conservation | This theory explains how a single change in any part of an ecosystem such as pollution, species loss, or deforestation sets off a chain of effects that disturb ecological balance. It highlights how healthy ecosystems provide essential services. |
Practice Questions
| Number | Name | Type | Difficulty | Marks | Description |
|---|---|---|---|---|---|
| 1. | Cascading effects in ecosystems | Other | easy | 1 m. | A multiple choice question explains how a small change in one part of an ecosystem triggers a chain reaction affecting many organisms and processes. |
| 2. | Cause-effect in ecosystems | Other | easy | 2 m. | This question emphasises how disturbances like pollution or deforestation lead to multiple environmental consequences in pond and forest ecosystems. |
| 3. | Frog-leg exportation | Other | easy | 3 m. | This question describes how removing frogs from an ecosystem caused pest outbreaks and ecological imbalance in the 1980s. |
| 4. | Benefits of ecosystems | Other | easy | 5 m. | This descriptive based long answer type question explains the different types of benefits ecosystems provide, including ecological services, economic resources, and cultural value. |
| 5. | The Sundarbans | Other | medium | 3 m. | This question emphasises the unique features and ecological significance of the Sundarbans mangrove forest ecosystem. |
| 6. | Threats to ecosystems | Other | medium | 6 m. | This question describes the major human-induced threats that degrade and destabilise natural ecosystems. |
| 7. | Protected areas in India | Other | medium | 4 m. | This descriptive based long answer type question explains how national parks, sanctuaries, biosphere reserves, and marine parks help conserve biodiversity. |
| 8. | Healthy ecosystems and farming | Other | medium | 2 m. | This statement based question emphasises how balanced ecosystems support sustainable agriculture by maintaining soil health and natural pest control. |
| 9. | Green Revolution (Impacts and Limitations) | Other | hard | 1 m. | Assertion and reasoning type of exercise describes how the Green Revolution increased food production but created long-term environmental and soil-related problems. |
| 10. | Problems in Modern Farming | Other | hard | 5 m. | This descriptive based question explains the ecological issues caused by excessive chemicals, monoculture, soil degradation, and loss of biodiversity in farms. |
| 11. | Sustainable agriculture practices | Other | hard | 2 m. | This multiple select based question emphasises eco-friendly farming techniques like crop rotation, biopesticides, composting, and biodiversity conservation. |
| 12. | Vrikshayurveda and Organic Farming | Other | hard | 2 m. | This question describes ancient Indian organic farming techniques that enrich soil naturally and promote eco-friendly cultivation. |