Unit 8 Test Review

If the population of predators in an ecosystem increases, what can we expect to happen to the population of the prey?

• Increase

• Decrease

• Stay the same

• Double

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Aphids provide nutrition to certain ants through waste from eating plant sap. The ants protect the aphids from predators and disease. What term BEST describes the relationship between the aphid and the ant?

• parasitism

• commensalism

• competition

• mutualism

Tags

NGSS.MS-LS2-2

Clown fish live in the waving tentacles of sea anemones in the ocean. The sea anemone provides a safe place for the clown fish to escape predators. The sea anemone, although it has poisonous tentacles, does not bother the clown fish and is not harmed by the clown fish. The sea anemone feeds on the waste from the clown fish. This relationship between organisms can be described as -

• commensalism

• mutualism

• parasitism

• predation

Many times a shark is seen with pilot fish swimming around it, eating scraps of food from the shark's meal. The shark is not harmed by the pilot fish, and the pilot fish benefits from the shark. What kind of relationship is this?

• Parasitism

• Mutualism

• Predation

• Commensalism

Which relationship is most like athlete’s foot fungus and humans?

• nitrogen-fixing bacteria and clover

• dogs and ticks

• hummingbirds and red flowers

• antelope and mountain lion

Relate the levels of organization in an ecosystem to something familiar using the analogy in the table.

• organism, population, community, ecosystem

• population, organism, ecosystem, community

• community, ecosystem, organism, population

• ecosystem, community, population, organism

Tags

NGSS.MS-LS2-2

There are levels of organization within an ecosystem. A deer’s community includes – Choose TWO correct answers.

• water in a nearby stream.

• the soil in the area.

• other deer.

• the grass the deer eats.

• the air the deer breathes.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

In a pond, red-winged blackbirds, mosquitoes, algae, lily pads, cattails, and perch are called a(n) __________. The red-winged blackbirds make up a(n) __________. Altogether, the organisms and their environment comprise the pond __________.

• population, community, ecosystem

• community, population, ecosystem

• ecosystem, population, community

• community, ecosystem, population

Tags

NGSS.MS-LS2-3

What is the term for a group of lions?

• Organism

• Population

• Community

• Ecosystem

What is the term for a group of lions, zebras, and hyenas?

• Organism

• Population

• Community

• Ecosystem