Understanding Ecosystems and Energy Flow

Front

What is a consumer in an ecosystem?

Back

An organism that cannot make its own food

Answer explanation

A consumer in an ecosystem is defined as an organism that cannot make its own food. Unlike producers, which create their own energy through photosynthesis, consumers rely on other organisms for sustenance.

Front

What best describes a decomposer?

Back

An organism that breaks down dead plant and animal material

Answer explanation

A decomposer is an organism that breaks down dead plant and animal material, recycling nutrients back into the ecosystem. This distinguishes it from producers, consumers, and nonliving components.

Front

Explain how energy flows in a food web.

Back

Energy flows from one organism to another in overlapping food chains.

Answer explanation

Energy flows through a food web as organisms interact in overlapping food chains, transferring energy from producers to consumers and ultimately to decomposers, illustrating the interconnectedness of ecosystems.

Front

What is a producer in an ecosystem?

Back

An organism that uses energy from the Sun to make its own food

Answer explanation

A producer is an organism that uses energy from the Sun to make its own food, typically through photosynthesis. This distinguishes it from consumers, which cannot produce their own food, and decomposers, which break down dead material.

Front

Identify an abiotic factor in an ecosystem.

Back

A rock

Answer explanation

An abiotic factor is a non-living component of an ecosystem. A rock is an abiotic factor, while a tree, rabbit, and decomposer are all biotic factors, as they are living organisms.

Front

How do biotic factors differ from abiotic factors in an ecosystem?

Back

Biotic factors are living, while abiotic factors are nonliving.

Answer explanation

Biotic factors are the living components of an ecosystem, such as plants and animals, while abiotic factors are the nonliving elements, like water and soil. Therefore, the correct choice is that biotic factors are living, and abiotic factors are nonliving.

Front

What is an ecosystem?

Back

The living and nonliving things that interact in an area

Answer explanation

An ecosystem includes both living (plants, animals) and nonliving (water, soil) components that interact with each other. This interaction is essential for the functioning of the ecosystem, making the correct choice the living and nonliving things that interact in an area.

Front

Example of a biotic factor: Water, Sunlight, Fish, Soil

Back

Fish

Answer explanation

A biotic factor refers to living components of an ecosystem. Among the options, fish are living organisms, making them a biotic factor, while water, sunlight, and soil are abiotic factors.

Front

What is an organism?

Back

An individual living thing

Answer explanation

An organism is defined as an individual living thing, distinguishing it from nonliving components of an ecosystem, groups of ecosystems, or abiotic factors. Therefore, the correct answer is 'An individual living thing'.

Front

Ecosystems are made up of...

Back

biotic and abiotic factors