PBL #2 Quiz

A species that supports an entire ecosystem.

• Keystone Species

• Herbivores

• Umbrella Species

• Predators

What is a keystone species?

• A species that helps to hold an ecosystem together

• A species that lives in or around rocks

• Keys and stones have nothing to do with ecology

• A keystone isn't a living thing, it's just a stone

Tags

NGSS.MS-LS2-2

What term describes the positive benefits that wildlife or ecosystems provides to people?

• ecosystem services

• ecosystem

• biodiversity

Which of the following is an example of an ecosystem service?

• water filtration

• food

• oxygen

• they all are!

What is the definition of an ecosystem?

• A group of animals of the same species living in the same place.

• All the plants and animals living in the same place.

• All organisms living in the same place and the abiotic factors that affect them.

in 1995 Wolves were reintroduced to Yellowstone National Park. Which answer below most accurately describes a possible trophic cascade the could result from the reintroduction of wolves?

• wolves reintroduced-> deer population increased -> tree and vegetation cover decreased

• wolves reintroduced-> beaver population decreased -> tree and vegetation cover increased

• wolves reintroduced-> deer population decreased -> tree and vegetation cover increased -> beaver population increased

• wolves reintroduced-> deer population decreased -> beaver population decreased -> songbird population increased

herbivores like to eat?

• meat

• grass

• meat and grass

• pizza

carnivores eat?

• meat

• grass

• both meat and grass

• chocolate

omnivores eat?

• meat

• grass

• both meat and grass

• pop tarts

a system of food chains that shows the transfer of energy is termed

• food web

• food chain

• prey

• predator