Case Study #7 - Wolves of Isle Royale Ecology Quiz

How did wolves come to inhabit Isle Royale?

• By swimming from the mainland

• By flying over the lake

• By crossing an ice bridge

• By being transported by humans

What is the primary type of forest found on Isle Royale?

• Tropical rainforest

• Boreal forest

• Deciduous forest

• Temperate forest

What animals are primarily found on Isle Royale besides wolves?

• Elephants and lions

• Moose and other small mammals

• Kangaroos and koalas

• Penguins and seals

What is the role of the National Park Service (NPS) regarding the wolf population?

• To build shelters for wolves

• To decide on repopulating the island with wolves

• To feed the wolves regularly

• To relocate the wolves to the mainland

What is the geographical size of Isle Royale?

• 100 square kilometers

• 580 square kilometers

• 1000 square kilometers

• 200 square kilometers

What ecological phenomenon is described in the document?

• Food chain

• Predator-prey cycle

• Symbiosis

• Mutualism

What is a keystone species according to the document?

• A species that is always a predator

• A species with top-down effects on the community

• A species that is always prey

• A species that is not important to the ecosystem

What effect does the removal of wolves have on falcon populations?

• No effect

• Direct increase

• Indirect effect

• Direct decrease

What happens to predator numbers as prey numbers increase?

• Predator numbers decrease

• Predator numbers remain constant

• Predator numbers increase

• Predator numbers become extinct

What is a common result of genetic drift in small populations?

• Increased population size

• Loss of genetic variation

• Introduction of new species

• Stable genetic variation