Principles of Ecology

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

• detritivores

• herbivores

• carnivores

• omnivores

Chemosynthesis is the process in which organisms

• form carbohydrates using chemicals.

• get energy by eating other organisms.

• use energy from the sun to form carbohydrates.

• make chemicals that absorb sunlight.

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.

Giant pandas eat bamboo almost exclusively. For this reason, giant pandas are an example of a(n)

• carnivore

• omnivore

• generalist

• specialist

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

A group of organisms of different species living together in a particular place is called a

A. community. C. biome.

B. population. D. habitat.

• biome

• population

• community

• habitat