Wolves of Yellowstone Quick Check

Which of the following is a direct impact of grey wolves on their prey populations?

• Increased birth rates of prey

• Decreased competition among prey

• Controlled population size of prey

• Increased migration of prey

Tags

NGSS.MS-LS2-4

What is the term used to describe species like grey wolves that have a large impact on their ecosystem?

• Invasive species

• Keystone species

• Endangered species

• Migratory species

Which of the following is a consequence of the absence of grey wolves in an ecosystem?

• Increased biodiversity

• Overpopulation of prey species

• Decreased plant growth

• More predators

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-2

What effect did the reintroduction of grey wolves have on the riverbanks in Yellowstone?

• Riverbanks eroded more quickly.

• Riverbanks became more stable.

• Riverbanks dried up.

• Riverbanks were unaffected.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-2

What is the primary role of grey wolves in the Yellowstone ecosystem?

• Pollinators of plants

• Apex predators

• Decomposers

• Herbivores

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-2

If there was a major drought at Yellowstone causing many plant species to die, the following would happen:

• the elk and wolf populations would go down

• the elk and wolf populations would go up

• the elk population would go up; the wolf population down

• the elk population would go down, the wolf population up

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

A trophic cascade is

• top-level predator

• when the impact of a predator on its prey affects one or more other levels of the food chain

• home environment of and organism

• when species get along

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-3

What is the primary effect of reintroducing wolves to Yellowstone on the elk population?

• Increased elk population

• Decreased elk population

• No change in elk population

• Elk population became extinct

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-2

NGSS.MS-LS2-1

How did the presence of wolves in Yellowstone affect the vegetation?

• Increased vegetation growth

• Decreased vegetation growth

• No effect on vegetation

• Vegetation became extinct

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-2

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Which of the following best describes the role of wolves in the Yellowstone ecosystem?

• Producers

• Primary consumers

• Secondary consumers

• Tertiary consumers

Tags

NGSS.MS-LS2-3