Unit 7 Honors Bio Test Review

Which of the following can be both primary and secondary consumers?

• detritivores

• herbivores

• carnivores

• omnivores

A model that shows a single sequence of feeding relationships is called a

• food web

• food chain

• feeding chain

• trophic level

Which of the following provide most of the energy in ecosystems?

• keystone species

• carnivores

• producers

• generalists

Decomposers are important to ecosystems because they

• can act as omnivores.

• capture energy from the sun.

• are producers.

• return vital nutrients back to the environment.

Food webs are models that show

• Only primary consumers in an ecosystem.

• Networks of feeding relationships.

• Stored energy in food chains.

• One sequence of producers and consumers.

A food chain contains oak trees (producer), mice (herbivore), black rat snakes (carnivore), and bald eagles (carnivore). How many trophic levels does this food chain have?

• four

• three

• two

• one

The temperature, rainfall, and soil/sand in an ecosystem would all qualify as

• a whole ecosystem

• abiotic factors

• biotic factors

• living things

A group of gray wolves living in Minnesota is an example of

• a community

• a biome

• an ecosystem

• a population

Which phrase best describes biodiversity?

• the amount of available energy in an ecosystem

• the number of individuals in an ecosystem

• the number of species in an ecosystem

• the amount of biomass in an ecosystem

An ecosystem consists of

• the soil, water and weather.

• a community of organisms.

• energy.

• all of the above.