Keystone Algebra

What is the primary function of a keystone species in an ecosystem?

• To provide food for predators

• To maintain the structure of an ecosystem

• To pollinate plants

• To decompose organic matter

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Which of the following is an example of a keystone species?

• Lion

• Elephant

• Sea otter

• Rabbit

How does the removal of a keystone species affect an ecosystem?

• It leads to increased biodiversity

• It causes a trophic cascade

• It has no significant impact

• It improves ecosystem stability

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

NGSS.MS-LS2-5

In a food web, what role does a keystone species typically play?

• Producer

• Primary consumer

• Secondary consumer

• Top predator

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Which of the following best describes a keystone species?

• A species with a large population

• A species that has a disproportionate effect on its environment

• A species that is the most abundant

• A species that is the most endangered

What is the relationship between keystone species and biodiversity?

• Keystone species decrease biodiversity

• Keystone species have no effect on biodiversity

• Keystone species increase biodiversity

• Keystone species only affect plant biodiversity

Which of the following is NOT a characteristic of a keystone species?

• High abundance

• Critical ecological role

• Influence on species diversity

• Dependence on a single food source

What happens to an ecosystem if a keystone species is introduced?

• It becomes more stable

• It becomes less stable

• It remains unchanged

• It becomes more diverse

Tags

NGSS.HS-LS2-6

NGSS.HS-LS4-5

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

• Shark

• Coral

• Sea star

• Dolphin

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

How do keystone species contribute to the balance of an ecosystem?

• By being the most numerous species

• By controlling the population of other species

• By being the largest species

• By being the fastest species

Tags

NGSS.HS-LS4-5