Abiotic and Biotic Factors

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

• Plants

• Temperature

• Animals

• Bacteria

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NGSS.MS-LS2-3

How do abiotic factors like sunlight and water influence the growth of plants in an ecosystem?

• They provide food for the plants.

• They are not necessary for plant growth.

• They help in photosynthesis and nutrient absorption.

• They compete with plants for resources.

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Which of the following best describes the relationship between biotic and abiotic factors in an ecosystem?

• Biotic factors are independent of abiotic factors.

• Abiotic factors are influenced by biotic factors.

• Biotic factors depend on abiotic factors for survival.

• Abiotic factors are not affected by biotic factors.

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NGSS.MS-LS2-3

Identify the abiotic factor from the following list:

• Fungi

• Soil

• Insects

• Birds

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Which of the following is a biotic factor that can affect the population of a species in an ecosystem?

• Rainfall

• Predators

• Temperature

• Sunlight

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How does the availability of water as an abiotic factor affect the distribution of animals in an ecosystem?

• Animals do not need water to survive.

• Water availability determines where animals can live.

• Animals can live anywhere regardless of water availability.

• Water is only important for plant life.

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Which of the following is an example of how biotic factors can influence abiotic factors in an ecosystem?

• Plants absorbing sunlight

• Animals breathing oxygen

• Trees providing shade and reducing soil temperature

• Rocks breaking down into soil

What role do decomposers play in the interaction between biotic and abiotic factors?

• They produce energy for the ecosystem.

• They break down dead organisms, returning nutrients to the soil.

• They compete with plants for sunlight.

• They increase the temperature of the environment.

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Which of the following statements is true about the interaction between abiotic and biotic factors?

• Abiotic factors are more important than biotic factors.

• Biotic factors can change abiotic factors over time.

• Abiotic factors do not affect biotic factors.

• Biotic factors are not influenced by abiotic factors.

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NGSS.MS-LS2-3

How does temperature as an abiotic factor affect the metabolic rates of animals in an ecosystem?

• Higher temperatures always decrease metabolic rates.

• Temperature has no effect on metabolic rates.

• Temperature can increase or decrease metabolic rates depending on the species.

• Lower temperatures always increase metabolic rates.

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