Kognity 3 test: Ecosystems and Biodiversity Flashcard

Front

What is the role of complex relationships in ecosystems?

Back

They contribute to stability

Answer explanation

Complex relationships in ecosystems, such as predator-prey interactions and symbiosis, enhance biodiversity and resilience, allowing ecosystems to better withstand changes and disturbances. Thus, they contribute to stability.

Front

Regions where boreal forests are primarily found?

Back

Subarctic regions

Answer explanation

Boreal forests are primarily found in subarctic regions, characterized by cold climates and coniferous trees. They do not occur in tropical, desert, or coastal regions, making 'Subarctic regions' the correct choice.

Front

What is nutrient recycling?

Back

The cycling of nutrients between the environment and organisms

Answer explanation

Nutrient recycling refers to the cycling of nutrients between the environment and organisms, ensuring that essential elements are reused and made available for biological processes, which is crucial for ecosystem health.

Front

How does recycling nutrients benefit ecosystems?

Back

It supports the productivity of populations

Answer explanation

Recycling nutrients supports the productivity of populations by replenishing essential elements in the ecosystem, allowing plants and animals to thrive and maintain healthy populations.

Front

What can changes in climatic conditions lead to?

Back

Shifts in species ranges and altered ecosystem composition

Answer explanation

Changes in climatic conditions can disrupt habitats, leading to shifts in species ranges and altering ecosystem composition. This is the most accurate outcome, as species must adapt or relocate to survive in changing environments.

Front

What is a tipping point in an ecosystem?

Back

A critical threshold leading to irreversible change

Answer explanation

A tipping point in an ecosystem refers to a critical threshold leading to irreversible change, where small alterations can cause significant and permanent impacts on the ecosystem's structure and function.

Front

What effect does transpiration have on the surrounding environment?

Back

Cools the surroundings

Answer explanation

Transpiration cools the surroundings by releasing water vapor into the air, which absorbs heat. This process helps lower temperatures in the environment, making it cooler, especially in areas with dense vegetation.

Front

Which tree species is mentioned as being under pressure due to the furniture industry?

Back

Teak

Answer explanation

Teak is under pressure due to the furniture industry because it is highly sought after for its durability and aesthetic appeal, leading to overharvesting and environmental concerns.

Front

Which factor is most critical for maintaining biodiversity in an ecosystem?

Back

Stable climate conditions

Answer explanation

Stable climate conditions are essential for maintaining biodiversity, as they provide a consistent environment for species to thrive. In contrast, high pollution, natural disasters, and limited genetic variation can harm ecosystems.

Front

What is the main consequence of deforestation on the carbon cycle?

Back

Increased release of carbon dioxide

Answer explanation

Deforestation leads to the destruction of trees, which are crucial for absorbing carbon dioxide. As trees are cut down, the stored carbon is released back into the atmosphere, resulting in an increased release of carbon dioxide.