Life Module 2 Review

What is the difference between a population and a community?

• A population is made up of all species in an area. A community is made up only of one species.

• A population is made up of only one species. A community is made up of all species in an area.

• A population is made up of all the species and nonliving things in an area. A community is made up of all species in an area.

• The words mean the same thing.

What is the difference between a community and an ecosystem?

• An ecosystem consists of living and nonliving things in an area. A community is all the members of one species in the area.

• An ecosystem consists of living and nonliving things in an area. A community is all the populations in the area.

• An ecosystem consists of nonliving things in an area. A community is all the living things in the area.

• An ecosystem consists of all the populations in an area. A community is all the nonliving things in the area.

Which of these is a limiting factor?

• food supply

• shelter

• existence of predators

• all of these

In a predator-prey relationship, _____.

• the predator hunts the prey for food

• the prey hunts the predator for food

• the prey keeps the predator population from growing too large

• the prey are producers

Which change in the ecosystem increases the carrying capacity for a particular species?

• drought

• flood

• appearance of a competing species

• disappearance of a competing species

What is the effect of the growth of a population in an ecosystem?

• fewer resources for each individual in the population

• a greater amount of resources in the ecosystem

• a decrease in the amount of resources needed by each individual

• an increase in the size of the ecosystem

Samantha plants some flowers in a flower bed and then ignores them. Soon weeds grow and the flowers die. The weeds had been able to get enough resources to survive, while the flowers had not. This is an example of _____.

• competition

• population size

• habitat

• community

A system that includes all living organisms (biotic factors) in an area as well as its physical environment (abiotic factors or nonliving things) functioning together as a unit.

• Population

• Catastrophic

• Species

• Ecosystem

The nonliving parts of an ecosystem.

• Biotic

• Photosynthesis

• Abiotic

• Variable

The living things in an ecosystem.

• Abiotic

• Variable

• Control

• Biotic