Ecosystem Interactions and Competition Quiz

How do organisms in an ecosystem depend on biotic factors?

• They rely on sunlight for energy.

• They compete for food and mates.

• They depend on soil composition.

• They rely on water availability.

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Which of the following is an abiotic factor in an ecosystem?

• Plants

• Animals

• Water

• Bacteria

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What might happen to a population if the availability of light decreases in an ecosystem?

• The population will increase.

• The population will remain the same.

• The population will decrease.

• The population will become extinct.

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Which of the following is a biotic factor that organisms compete for in an ecosystem?

• Temperature

• Soil composition

• Food

• Water

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How does soil composition affect organisms in an ecosystem?

• It provides light for photosynthesis.

• It determines the types of plants that can grow.

• It affects the availability of water.

• It provides a habitat for aquatic animals.

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Which of the following is an example of organisms competing for an abiotic factor?

• Two species of birds competing for nesting sites.

• Plants competing for sunlight.

• Predators competing for prey.

• Herbivores competing for plants.

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Why is water considered an abiotic factor in ecosystems?

• It is a living organism.

• It is necessary for photosynthesis.

• It is a non-living component that affects living organisms.

• It is a source of food for animals.

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What might happen to an ecosystem if a key biotic factor is removed?

• The ecosystem will remain unchanged.

• The ecosystem will become more diverse.

• The ecosystem may collapse.

• The ecosystem will become more stable.

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Which of the following is NOT a biotic factor in an ecosystem?

• Fungi

• Rocks

• Insects

• Trees

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How does the availability of water affect plant populations in an ecosystem?

• It has no effect on plant populations.

• It determines the types of plants that can survive.

• It increases the number of predators.

• It decreases the number of herbivores.

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