Trophic Levels, Interactions, Population Dynamics

Front

What is biomass?

Back

Amount of living mass at the trophic level.

Front

What happens to the bird population if the mouse population increases?

Back

The bird population would likely increase.

Front

What does a pyramid represent in ecology?

Back

Trophic levels.

Front

What is the efficiency of energy transfer from one trophic level to the next?

Back

Roughly 10%.

Front

What is a trophic level?

Back

A position in a food chain or food web, defined by how many energy transfers away from the original source of energy.

Front

What is the primary source of energy for most ecosystems?

Back

The sun.

Front

What is a food chain?

Back

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

Front

What is a food web?

Back

A complex network of feeding relationships among various organisms in an ecosystem.

Front

What is the role of producers in an ecosystem?

Back

Producers convert solar energy into chemical energy through photosynthesis.

Front

What are consumers?

Back

Organisms that obtain energy by eating other organisms.