ecology practice

Front

What do the arrows in a food web represent?

Back

The arrows show where the energy is going.

Front

If the bird population decreases, which populations are likely to increase?

Back

Bees and grasshoppers.

Front

What is a symbiotic relationship where both organisms benefit?

Back

Mutualism.

Front

Define a producer, consumer, and decomposer.

Back

A producer makes its own food, a consumer eats other organisms for energy, and a decomposer breaks down dead organisms for energy.

Front

In a food web, what is a primary consumer and what is a secondary consumer?

Back

A mouse is a primary consumer and a snake is a secondary consumer.

Front

What is the role of a decomposer in an ecosystem?

Back

Decomposers break down dead organic material, recycling nutrients back into the ecosystem.

Front

What is the difference between mutualism and parasitism?

Back

In mutualism, both organisms benefit; in parasitism, one organism benefits at the expense of the other.

Front

What is a food chain?

Back

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

Front

What is an ecosystem?

Back

An ecosystem is a community of living organisms interacting with their physical environment.

Front

What is biodiversity?

Back

Biodiversity refers to the variety of life in a particular habitat or ecosystem.