Wolves of Yellowstone Quick Check

When wolves are three weeks old, they eat

• milk

• regurgitated meat

• plants

• willows

Why do wolves howl?

• To scare off predators

• To communicate with other wolves

• They howl to the moon

• To find prey

How can the removal of an apex predator affect the populations at the trophic level below?

• It can decrease the abundance of the prey's prey

• It has no effect on the trophic levels below

• It can increase the abundance of the prey's prey

• It can only affect the same trophic level

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

NGSS.MS-LS2-3

Name the Interaction.

• Mutualism/Commensalism

• Parasitism

• Predation

• Competition

Tags

NGSS.MS-LS2-2

As the number of gray wolves in Yellowstone increases, the number of elk (a)   .

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

As the number of gray wolves in Yellowstone increases, the number of aspen trees (a)   .

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

Cause and Effect. Look at the food web. Due to hunting and competition from the bears, wolves and the mountain lions, the coyote has died out. What is the likely effect of it on the grass?

• The amount of grass is likely going to decrease because there are more rabbits eating it.

• The amount of grass will likely increase now that there are more rabbits eating it.

• The amount of grass will likely remain the same.

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

NGSS.MS-LS2-1

What is the primary diet of wolves in Yellowstone during the winter months?

• Elk

• Bison

• Deer

• Moose

How did the reintroduction of wolves to Yellowstone affect the river ecosystems?

• Increased erosion

• Decreased vegetation

• Improved riverbank stability

• No effect

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

What role do wolves play in the Yellowstone ecosystem?

• Primary producers

• Apex predators

• Decomposers

• Herbivores

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

NGSS.MS-LS2-3