Module Test: Dynamic Ecosystems

A community consists of all the organisms in an ecosystem that belong to the same species.

• True

• False

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.

If there are no limiting factors, a population can reach its _____.

• competition level

• population potential

• population density

• biotic potential

Mutualism is any close relationship between different species.

• True

• False

The largest number of individuals of one species that an ecosystem can support over time is its biotic potential.

• True

• False

A symbiotic relationship that benefits both species is referred to as commensalism.

• True

• False

Tags

NGSS.MS-LS2-2

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

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

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

Tags

NGSS.MS-LS2-4

Succession continues until it reaches a pine forest community.

• True

• False

Tags

NGSS.MS-LS2-4