This video tutorial introduces the concept of ecosystems, explaining key terms such as organism, population, community, and ecosystem. It distinguishes between biotic and abiotic factors and clarifies the difference between a habitat and a niche. Through examples, the video illustrates how organisms interact within their environments, forming populations and communities, and how these interactions contribute to the ecosystem as a whole.

What term describes a group of the same species living in the same area?

• Ecosystem

• Population

• Organism

• Community

Which example describes a population in an ecosystem?

• Sunlight and water availability

• A group of deer in a forest

• Interactions between plants and animals

• A forest of mixed species

Which of the following best defines a community in an ecosystem?

• All biotic and abiotic factors

• A single species population

• All living things in an area

• Interacting populations in an area

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What distinguishes a community from a population?

• Population includes nonliving elements

• Population is a broader term than community

• Community consists of multiple populations

• Community includes abiotic factors

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

• Deer

• Bacteria

• Trees

• Sunlight

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What is the primary difference between biotic and abiotic factors?

• Biotic are living, abiotic are nonliving

• Biotic are energy sources, abiotic are material

• Biotic are nonliving, abiotic are living

• Biotic are mobile, abiotic are static

Which component is not considered a biotic factor in an ecosystem?

• Water

• Fungi

• Plants

• Animals

Which of the following is true about ecosystems?

• They are made up of biotic and abiotic components

• They include only the natural environment

• They consist only of living organisms

• They are smaller than communities

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-5

What does a niche represent in an ecosystem?

• A group of organisms

• A physical location

• A type of organism

• A role played by an organism

What is the habitat of an organism?

• The role it plays in the ecosystem

• The living conditions it prefers

• The diet it consumes

• The location where it lives