
Stability and change in populations and ecosystems
Authored by Ashwini Ram
Science
8th Grade
NGSS covered
Used 60+ times

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30 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which is true of the relationship between the grass and lion?
The grass is the consumer and the lion is the producer.
As the grass population increases, the lion population increases.
As the grass population decreases, the lion population increases.
As the grass population increases, the lion population remains
the same.
Tags
NGSS.MS-LS2-4
NGSS.MS-LS2-1
NGSS.MS-LS2-2
NGSS.MS-LS2-3
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first type of organism to appear during primary succession?
Trees
Pioneer species
Grasses
Large animals
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which event is most likely to lead to primary succession?
A wildfire in a forest
A hurricane flooding a coastline
A volcanic eruption creating new land
A forest being cleared for farming
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does secondary succession differ from primary succession?
Secondary succession starts where soil already exists.
Secondary succession begins without any soil.
Secondary succession takes longer than primary succession.
Secondary succession removes pioneer species.
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
This energy pyramid model the flow of energy between organisms. Use the diagram to help you answer the question.
The energy needs of organisms increase from level to level in an ecosystem. With each level of the pyramid, only 10% of the energy available is used by organisms.
The energy needs of organisms decrease from level to level in an ecosystem. With each level in an ecosystem transferring only 10%. This means that the remaining 90% is the energy used and lost as heat.
The energy needs of organisms increase from level to level in an ecosystem. Therefore, the total amount of energy available at each level increases in an ecosystem.
The energy needs of organisms do not flow from level to level in an ecosystem. Therefore, the total amount of energy stays the same in an ecosystem.
Tags
NGSS.MS-LS2-3
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What do pioneer species do in primary succession?
Create soil for other plants to grow
Remove competition between species
Stabilize populations of large animals
Provide shade for larger plants
Tags
NGSS.MS-LS2-1
NGSS.MS-LS2-2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
During primary succession, what increases over time?
Soil quality and plant diversity
Soil moisture and water levels
Plant size and animal populations
Population stability and competition
Tags
NGSS.MS-LS2-4
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