Ecology Test Review

A group of organisms of the same species that live in the same area is called a(n)

• community

• population

• biome

• ecosystem

Herbivores are which of the following?

• producers

• secondary consumers

• primary consumers

• decomposers

Organisms that feed on dead or decaying mater are called

• herbivores

• carnivores

• omnivores

• detritivores

What do all the biotic and abiotic factors in a given area make up?

• a habitat

• a community

• an ecosystem

• a population

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

• keystone species

• carnivores

• generalists

• producers

Almost all autotrophs get their energy from

• sunlight

• hydrothermal pools

• decaying matter

• producers

An organisms that has an unusually large effect on the ecosystem is called a(n)

• keystone species

• omnivore

• biotic factor

• heterotroph

Two robins eating worms on the same lawn is an example of

• mutualism

• commensalism

• competition

• parasitism

Predation is best described as

• one organism capturing and eating another

• two organisms competing for limited resources

• an interaction in which two species benefit from each other

• an interaction in which one species benefits and other is not affected

One difference between parasitism and predation is that parasites

• do very little harm to their hosts

• keep their hosts alive for a period of time

• attack the host only from the inside

• are not very big