Keystone Species Types

Based on the graph shown, how can you tell sea otters are a keystone species?

• as the sea otter population decreases, biodiversity increases

• as sea otter population increases, biodiversity increases

• changes in the sea otter population have little effect on biodiversity 

• the sea otter population dereases due to the presence of urchins

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Species that are crucial to the functioning of an ecosystem

• keystone species

• exotic species

• invasive species

• indicator species

• endangered species

Tags

NGSS.MS-LS2-5

A species that plays a far more important in its community than its relative abundance might suggest.

• Keystone Species

• Pioneer Species

• Indicator Species

• Exotic Species

Tags

NGSS.MS-LS2-4

A keystone species that creates or maintains habitat for other species.

• Foundation Species

• Pioneer Species

• Indicator Species

• Exotic Species

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

species is an organism that plays a uniquely important role in the way an ecosystem functions.

• native

• keystone

• invasive

• indicator

Species whose roles have a large effect on the types and abundance of other species in an ecosystem are called _______ species

• endemic

• indicator

• keystone

• specialist

• native

Tags

NGSS.MS-LS2-4

A species of sea star helps to maintain the diversity of the intertidal region by controlling the mussel population. Without the sea star, the mussel population would crowd out other species and take over their ecosystem.

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The sea star could be called a(n) ____ species.

• endemic

• invasive

• indicator

• keystone

• specialist

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Which of the following is a keystone species that modifies the environment to create new habitats for other species?

• Foundation Species

• Pioneer Species

• Indicator Species

• Exotic Species

Tags

NGSS.MS-LS2-4

In an ecosystem, a keystone species is often responsible for which of the following?

• Increasing biodiversity by controlling populations

• Decreasing biodiversity by dominating resources

• Introducing new species to the ecosystem

• Eliminating invasive species

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-5

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

• Sea Otter

• Jellyfish

• Clownfish

• Sea Turtle

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4