International Green Warrior Olympiad Class 11 Previous Year Papers

Q.1

Researchers conducted an experiment to evaluate the impact of controlled burning on grassland ecosystems. The results indicate an increase in plant diversity post-burn.
What is the likely reason for this observation?

Q.2

In a study comparing two carbon offset projects, Project X focuses on reforestation, while Project Y invests in renewable energy projects. The amount of carbon dioxide equivalent (CO₂e) sequestered over a ten-year period of both projects is given below. Based on the data provided, which of the following statements is true?

1. Project X contributes more to mitigating climate change by reducing atmospheric CO₂ levels, thus aiding in global efforts to combat global warming.
2. Project Y contributes more by enhancing local biodiversity and ecosystem health, promoting a sustainable environment for flora and fauna.
3. Both Project X and Project Y improve air quality in their respective regions.
4. Both Project X and Project Y reduces the resilience of ecosystem to the impacts of climate change, such as droughts, floods, and wildfires.

Q.3

Researchers conducted an experiment to assess the impact of ocean acidification on marine snail populations. They exposed snails to different pH levels in controlled environments and measured their growth rates over time. The graph below illustrates the relationship between pH levels, carbonate ion concentration. Based on this data, what is the probable outcome for marine snail populations as the H⁺ increases in the seawater?

Q.4

In a biodiversity conservation project, two strategies were implemented to protect endangered species: Strategy A focused on captive breeding programs, while Strategy B emphasised habitat restoration and protection. Which strategy is more likely to result in the long-term conservation of endangered species?

Q.5

Consider the case study given below and answer the following question:

Case Study: Rejuvenating the Red Desert

The once fertile plains of the Red Desert now lie barren and parched. Decades of unsustainable agricultural practices, deforestation, and overgrazing have stripped the land of its topsoil, leaving behind a landscape of eroded gullies and windblown sand. The local community, dependent on the land for their livelihood, faces diminishing harvests and increasing dust storms.

The Challenge: Restoring the Red Desert requires a multi-faceted approach that addresses both the physical and social dimensions of land degradation. The key challenges include:

-Soil erosion and nutrient depletion: Restoring soil fertility is crucial for supporting plant growth.
-Water scarcity: The arid climate presents a significant challenge for plant growth. Implementing water harvesting systems like rainwater cisterns and promoting drought-resistant crops can optimise water use.
-Loss of biodiversity: Restoring native plant and animal populations is essential for creating a healthy and resilient ecosystem. This can involve assisted regeneration, seed dispersal, and creating wildlife corridors.
- Community engagement: Sustainable land management requires the active participation of the local community. Building trust, providing training, and ensuring equitable access to resources are crucial for long-term success.

The Outcome: Over time, the Red Desert undergoes a remarkable transformation. Eroded gullies are filled with fertile soil, native plants flourish, and animal populations return. The community experiences increased food security and improved livelihoods, thanks to sustainable farming practices and diversified income sources. The success of the program serves as a model for other communities facing land degradation, demonstrating the power of collaboration and knowledge-based solutions in restoring lost ecosystems and building a sustainable future.

Based on the case study, which of the following crops would be most suitable for cultivation in the Red Desert environment to promote biodiversity and ensure food security?

1. Wheat (moderate water demand, monoculture, requires fertile soil)
2. Millet (low water demand, can be intercropped, drought-resistant)
3. Sorghum (moderately drought-resistant, can be intercropped)

Q.6

You're a local community leader in a coastal village known for its thriving fish farms. While these farms provide valuable food and income for the community, you've noticed concerns about water quality, with algae blooms and fish kills in nearby rivers. Scientists attribute this to nutrient runoff from the farms.

To promote responsible aquaculture and address these environmental concerns, which principle should be prioritised?

Q.7

A small rural community plans to enhance its energy generation capacity by installing a hydroelectric dam to utilise the potential energy of water from a nearby river. Initially, the dam has a reservoir depth of 20 meters.
If the community decides to double the reservoir depth to 40 meters by expanding the dam, what effect does this have on energy production?

Q.8

You want to reduce your household food waste, a major contributor to greenhouse gas emissions.
Which practical approach is most effective?

1. Compost all food scraps, even meat and dairy, reducing landfill waste.
2. Plan meals meticulously and buy only what you need to avoid buying and discarding excess food.
3. Store food properly to extend shelf life and prevent spoilage.

Q.9

Some scientists propose using geoengineering techniques like injecting aerosols into the atmosphere to reflect sunlight and temporarily cool the planet. However, there are concerns about the potential unintended consequences of such interventions.
Which of the following is/are concern(s) regarding geoengineering with aerosols?

1. Disruption of weather patterns
2. Enhancement of ozone depletion
3. Positive impact on climate change awareness

Q.10

Two islands in the Pacific Ocean experience similar climates but have different levels of deforestation. Island A has lost 80% of its original forest cover, while Island B has maintained 90% of its forest. Over the past decade, Island A has experienced more frequent and intense heat waves compared to Island B. Which of the following is the most likely explanation for this difference?