Define trophic level .

A trophic level is a step in a food chain or food web, representing how energy flows through an ecosystem.

What do all ecosystems depend on to maintain their structure and function?

All ecosystems depend on a continuous input of high-quality energy , primarily from the Sun .

True or False? Energy and matter both cycle through ecosystems.

False. Energy flows in one direction, from the Sun to producers and then through consumers, while matter cycles between organisms and the environment.

Matter is not created or destroyed; it is continuously cycled through cycles.

Matter is not created or destroyed; it is continuously cycled through biogeochemical cycles.

Between which parts of the Earth system does carbon move in the carbon cycle?

In the carbon cycle, carbon moves between the atmosphere , organisms , and fossil fuels .

How do producers capture energy for an ecosystem?

Producers such as plants, algae, and phytoplankton convert solar energy into chemical energy through photosynthesis .

Through which parts of the Earth system is nitrogen cycled?

Nitrogen is cycled through the atmosphere , soil , and organisms .

True or False? Primary consumers feed on other consumers.

False. Primary consumers are herbivores that eat producers .

What types of organisms are secondary consumers?

Secondary consumers are carnivores or omnivores that eat other consumers.

The top predators in a food chain are the consumers.

The top predators in a food chain are the tertiary consumers.

Through which parts of the Earth system does phosphorus move?

Phosphorus moves through rocks , soil , water , and organisms .

Why do balanced biogeochemical cycles support healthy ecosystems?

Balanced biogeochemical cycles support healthy ecosystems because they help to maintain the availability of essential nutrients .

What role do decomposers play in an ecosystem?

Decomposers such as fungi and bacteria break down dead organisms, returning nutrients to the soil or water.

AP®Environmental ScienceCollege BoardFlashcardsUnit 1: The Living World: EcosystemsTrophic Levels

Trophic Levels (College Board AP® Environmental Science): Flashcards

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FrontTrophic Levels in Ecosystems
Define trophic level.

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Cards in this collection (13)

Define trophic level.
A trophic level is a step in a food chain or food web, representing how energy flows through an ecosystem.
What do all ecosystems depend on to maintain their structure and function?
All ecosystems depend on a continuous input of high-quality energy, primarily from the Sun.
True or False?
Energy and matter both cycle through ecosystems.
False.
Energy flows in one direction, from the Sun to producers and then through consumers, while matter cycles between organisms and the environment.
Matter is not created or destroyed; it is continuously cycled through cycles.
Matter is not created or destroyed; it is continuously cycled through biogeochemical cycles.
Between which parts of the Earth system does carbon move in the carbon cycle?
In the carbon cycle, carbon moves between the atmosphere, organisms, and fossil fuels.
How do producers capture energy for an ecosystem?
Producers such as plants, algae, and phytoplankton convert solar energy into chemical energy through photosynthesis.
Through which parts of the Earth system is nitrogen cycled?
Nitrogen is cycled through the atmosphere, soil, and organisms.
True or False?
Primary consumers feed on other consumers.
False.
Primary consumers are herbivores that eat producers.
What types of organisms are secondary consumers?
Secondary consumers are carnivores or omnivores that eat other consumers.
The top predators in a food chain are the consumers.
The top predators in a food chain are the tertiary consumers.
Through which parts of the Earth system does phosphorus move?
Phosphorus moves through rocks, soil, water, and organisms.
Why do balanced biogeochemical cycles support healthy ecosystems?
Balanced biogeochemical cycles support healthy ecosystems because they help to maintain the availability of essential nutrients.
What role do decomposers play in an ecosystem?
Decomposers such as fungi and bacteria break down dead organisms, returning nutrients to the soil or water.

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