Pre-AP Bio Unit 1: Ecology

Front

What are density-independent limiting factors to population growth?

Back

Factors that affect population size regardless of the population's density, such as natural disasters.

Front

What type of bond holds the hydrogen and oxygen atoms together within a water molecule?

Back

Polar Covalent bonds.

Front

Which trophic level makes its own food?

Back

Producers.

Front

What do producers always do to obtain energy?

Back

They get energy from the sun.

Front

How is the direction of energy flow in a food web represented?

Back

By arrows.

Front

Define 'ecosystem'.

Back

A community of living organisms and their interactions with their environment.

Front

What is a 'trophic level'?

Back

A position in a food chain or food web, defined by how organisms obtain energy.

Front

What role do herbivores play in an ecosystem?

Back

They are primary consumers that eat producers.

Front

What is the difference between a food chain and a food web?

Back

A food chain is a linear sequence of energy transfer, while a food web is a complex network of interconnected food chains.

Front

What is 'biomass'?

Back

The total mass of living matter within a given area or volume.