What is a trophic cascade?

Ecosystem Dynamics and Species Interactions

Interactive Video
•
Biology, Science, Geography
•
9th - 10th Grade
•
Hard

Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A method of planting trees to restore ecosystems
A process where the removal of one species affects others in the ecosystem
A type of ecosystem where all species are equally important
A way to measure the biodiversity of an ecosystem
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following best describes a top-down cascade effect?
The removal of secondary consumers has no effect on the ecosystem
The introduction of new species stabilizes the ecosystem
The removal of apex predators affects species below them
The removal of primary producers affects the entire ecosystem
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What role do keystone species play in an ecosystem?
They are the primary producers in an ecosystem
They are crucial for maintaining the ecosystem's structure
They have little impact on the ecosystem's stability
They are the most abundant species in an ecosystem
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the crocodile population if Jaguars are removed from the Amazon food web?
The crocodile population remains stable
The crocodile population increases
The crocodile population becomes extinct
The crocodile population decreases
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the removal of Jaguars affect secondary consumers like snakes?
They become primary consumers
Their population remains unchanged
Their population decreases
Their population increases
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the initial impact of a disease wiping out frogs in the Amazon?
Stability in the ecosystem
Increase in tree kangaroo and bandicoot populations
Decrease in tree kangaroo populations
Increase in plant populations
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What might happen to snake populations if frogs are removed from the ecosystem?
Snake populations increase
Snake populations decrease
Snake populations remain stable
Snakes become primary consumers
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