Interactions Within Ecosystems

What is the classification of organisms in the Animalia kingdom?

• Plants

• Animals

• Fungi

• Protists

Define the term 'ecosystem' in your own words.

• A man-made structure for housing animals

• A group of unrelated organisms in a confined space

• Community of living organisms interacting with each other and their physical environment.

• A single organism living in isolation

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Name one example of a biotic factor in an ecosystem.

• Sunlight

• Rainbows

• Plants

• Rocks

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What is the primary source of energy in most ecosystems?

• Sunlight

• Coal

• Wind

• Geothermal

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How do living organisms contribute to the cycling of nutrients in an ecosystem?

• Living organisms store nutrients in the ecosystem

• Living organisms have no role in nutrient cycling

• Living organisms deplete nutrients in the ecosystem

• Living organisms absorb, release, and transfer nutrients in the ecosystem.

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Explain the difference between a food chain and a food web.

• A food chain involves only producers, while a food web includes only consumers.

• A food chain represents energy flow, while a food web represents nutrient flow.

• A food chain is circular, while a food web is linear.

• A food chain is linear, while a food web is interconnected.

What role do decomposers play in an ecosystem?

• Decomposers create new organisms in the ecosystem.

• Decomposers reduce the amount of oxygen in the ecosystem.

• Decomposers break down dead organisms and organic matter, recycling nutrients back into the ecosystem.

• Decomposers increase the acidity of the ecosystem.

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How do environmental factors like temperature and rainfall affect the distribution of organisms?

• Temperature and rainfall only affect large organisms, not small ones

• Organisms can adapt to any temperature and rainfall conditions

• Temperature and rainfall have no impact on the distribution of organisms

• Temperature and rainfall affect the distribution of organisms by determining the availability of resources such as water and food.

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Describe the process of photosynthesis and its importance in ecosystems.

• Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy stored in glucose molecules. It is important in ecosystems as it provides energy for organisms and produces oxygen.

• Photosynthesis is the process of converting chemical energy into light energy.

• Photosynthesis does not involve the production of oxygen.

• Photosynthesis is only important in marine ecosystems.

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What is the significance of biodiversity in an ecosystem?

• Ecosystems with low biodiversity are more productive

• Biodiversity contributes to ecosystem stability, resilience, productivity, and provides ecosystem services.

• Biodiversity has no impact on ecosystem stability

• Biodiversity does not provide any ecosystem services

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