

Ecosystem Dynamics and Biodiversity Concepts
Interactive Video
•
Biology
•
9th - 10th Grade
•
Practice Problem
•
Hard
Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is one of the general features of ecosystems mentioned in the video?
They never change.
They are always changing.
They are stable over long periods but can change dramatically.
They are unstable and change frequently.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is biodiversity defined in the video?
The size of an ecosystem.
The number of different organisms interacting in an ecosystem.
The variety of terrains in an ecosystem.
The number of plants in an ecosystem.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does species richness refer to?
The total number of different species in an ecosystem.
The number of plants in an ecosystem.
The number of animals in an ecosystem.
The total number of organisms in an ecosystem.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is species abundance?
The number of different species in an ecosystem.
The number of individuals in each species and their proportion in the ecosystem.
The number of plants in an ecosystem.
The number of animals in an ecosystem.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is an example of an ecosystem with an uneven distribution of species?
An ecosystem dominated by elephants and one type of grass.
An ecosystem with equal numbers of all species.
An ecosystem with no dominant species.
An ecosystem with only plants.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why do complex food webs contribute to ecosystem stability?
They have fewer interactions.
They have more interactions and competition, preventing dominance.
They have no competition.
They are simple and easy to manage.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens if a single organism is removed from a complex food web?
The ecosystem collapses.
The ecosystem remains stable due to other interactions.
The ecosystem stops functioning.
The ecosystem becomes unstable.
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