Keystone Ecology

Which statement best describes the relationship between species A and B?

• Species A is the prey of Species B

• Species A is a parasite of Species B

• Species A is a consumer and B is a producer

• Species A and B has a mutualistic relationship

Tags

NGSS.MS-LS2-2

A species that plays a critical role in the health, maintenance, growth, or definition of an ecosystem.

• keystone

• invasive

• engineer

• predator

Tags

NGSS.MS-LS2-4

Which one of the following keystone examples is a keystone predator found in the tidal pools of northwestern North America and was the species that launched Robert Paine’s keystone species concept?

• starfish

• sea otters

• beavers

• wolves

• elephants

Tags

NGSS.MS-LS2-4

Keystone species is

• A species that is endangered

• A species that influences the survival of many other species in an ecosystem

• A species that emigrates from an ecosystem

• A species that does not help the ecosystem

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-2

What does a food web represent?

• All connections of energy flow throughout all organisms in a habitat.

• The specific ways that mutualism is carried out.

• A single pathway or energy flow between organisms. 

• How carnivores get their food. 

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

Which is NOT a way to decrease your ecological footprint?

• Eating less meat and processed foods

• Walking or biking to school

• Turning off electricity and water when you're not using it. 

• Driving a large car around for fun.

Tags

NGSS.MS-ESS3-4

What is a species whose presence and role within an ecosystem has a disproportionate effect on other organisms within the system?

• Threatened Species

• Endangered Species

• Invasive Species

• Keystone Species

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Which of the following is an example of a keystone species in marine ecosystems?

• Sea otters

• Coral reefs

• Dolphins

• Sharks

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

What role do keystone species play in an ecosystem?

• They are the most abundant species

• They have a large impact on their environment relative to their abundance

• They are the largest species in the ecosystem

• They are the primary producers

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-2

NGSS.MS-LS2-5

Which of the following is a characteristic of a keystone species?

• They are always predators

• They can be any organism that has a significant impact on the ecosystem

• They are always herbivores

• They are always the top of the food chain

Tags

NGSS.MS-LS2-4