NC Biology EOC Review: Ecosystems

Front

What is Parasitism?

Back

A relationship between two organisms where one organism benefits at the expense of the other.

Front

What is Commensalism?

Back

A relationship between two organisms where one benefits and the other is neither helped nor harmed.

Front

What is Territoriality in animals?

Back

Behavior that involves defending a specific area against others of the same species.

Front

What happens to energy as it moves up trophic levels?

Back

Energy decreases, typically by about 90% at each level.

Front

What is the role of predators in an ecosystem?

Back

Predators help control prey populations, which can prevent overgrazing and promote biodiversity.

Front

Define Competition in ecology.

Back

A relationship where two or more organisms compete for the same resources, such as food, space, or mates.

Front

What is Mutualism?

Back

A symbiotic relationship where both organisms benefit from the interaction.

Front

What is the significance of keystone species?

Back

Keystone species have a disproportionately large effect on their environment relative to their abundance.

Front

How do decomposers contribute to an ecosystem?

Back

Decomposers break down dead organic matter, recycling nutrients back into the soil.

Front

What is a food chain?

Back

A linear sequence of organisms through which nutrients and energy pass as one organism eats another.