Trophic Cascades

Which of the following show indirect effects of one organism to the next?

• Bass to phytoplankton.

• Bass to minnows.

• Minnows to zooplankton.

• Zooplankton to phytoplankton.

Tags

NGSS.MS-LS2-2

Why did the vegetation on the Aleutian islands grow sparse?

• indirect negative impact of the fox population on the seabirds

• direct negative impact of the fox population on the seabirds

• direct positive impact of the seabirds on vegetation

• direct negative impact of the seabirds on the foxes

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Which of the following brought direct negative impacts of the next trophic level?

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• 
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Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Choose all organisms associated with this trophic cascade.

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• 
• 
• 

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What causes trophic cascades?

• Increasing the number of producers

• Pollution

• The removal of a keystone species

• Introducing a new species to an ecosystem

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Investigate how the introduction of a new keystone species might affect an existing ecosystem.

• The introduction of a new keystone species will have no effect on the ecosystem

• The introduction of a new keystone species can disrupt the existing balance, potentially leading to changes in population dynamics and ecosystem structure

• The introduction of a new keystone species will only affect the primary producers

• The introduction of a new keystone species will only affect the top predators

Tags

DOK Level 4: Extended Thinking

Which of the following was affected by the loss of the otters?

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• 
• 
• 

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What is true about the sea star species?

• it is a keystone species

• it has no real effect on the environment

• it controls the mussel population

• it is found at the top of a trophic cascade

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Trophic cascades refer to...

• impacts that reach beyond adjacent trophic levels.

• impacts that reach the adjacent trophic level.

• impacts that reach only one trophic level.

• impacts that reach the top trophic level

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Which of the following describes the broader consequences or side-effects when a certain species that usually helps to keep the entire ecosystem balanced is reduced or removed.

• trophic level

• trophic cascade

• food web

• keystone species

Tags

NGSS.MS-LS2-4