STAAR Review Biology Category 5

Front

What is an ecosystem?

Back

An ecosystem is an area that includes all living (biotic) and non-living (abiotic) entities interacting with each other.

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What are trophic levels?

Back

Trophic levels are the different feeding steps in a food chain or energy pyramid, including producers, primary consumers, and higher-level consumers.

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What is mutualism?

Back

Mutualism is a symbiotic relationship in which both organisms benefit from the interaction.

Front

What is a limiting factor?

Back

A limiting factor is a resource or condition that limits the growth, abundance, or distribution of an organism or a population of organisms.

Front

Which organism receives the least amount of energy from the producer in a food chain?

Back

The owl receives the least amount of energy from the producer.

Front

What is a food web?

Back

A food web is a complex network of feeding relationships among various organisms in an ecosystem.

Front

What is the difference between biotic and abiotic factors?

Back

Biotic factors are living components of an ecosystem, while abiotic factors are non-living components, such as water, sunlight, and minerals.

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What is competition in ecology?

Back

Competition is an interaction between organisms or species in which both are harmed as they compete for limited resources.

Front

What is nitrogen fixation?

Back

Nitrogen fixation is the process by which certain organisms convert nitrogen gas from the atmosphere into ammonia, which can be used by plants.

Front

What is a biome?

Back

A biome is a large geographic biotic unit, a major community of plants and animals with similar life forms and environmental conditions.