Biology Chapter 3 Test

Front

What are biomes?

Back

Regions of the biosphere that share certain environmental conditions, such as climate, and have a certain set of organisms adapted to those conditions.

Front

What does biodiversity refer to?

Back

The number of species in an area.

Front

What are autotrophs also known as?

Back

Producers.

Front

What are the two primary factors that define a particular climate?

Back

Temperature and precipitation.

Front

What is a plausible food chain?

Back

Producer, herbivore, carnivore, decomposer.

Front

Define ecosystem.

Back

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

Front

What is the role of decomposers in an ecosystem?

Back

Decomposers break down dead organic material, returning nutrients to the soil.

Front

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

Back

A food chain is a linear sequence of organisms through which nutrients and energy pass, while a food web is a complex network of interconnected food chains.

Front

What is an example of a primary consumer?

Back

Herbivores, such as rabbits or deer, that eat producers.

Front

What is the significance of keystone species?

Back

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