How do decomposers help plants get the nutrients they need?

Decomposers break down dead things and release nutrients into the soil.

Decomposers collect nutrients from the air.

Decomposers eat plants and release nutrients.

Decomposers make nutrients from sunlight.

What is one way that animals in an ecosystem compete for food?

Animals might share their food.

How does the temperature of an ecosystem affect the plants that grow there?

Different plants grow best in different temperatures.

Plants don't need temperature to grow.

All plants grow best in warm temperatures.

All plants grow best in cold temperatures.

What is the main difference between primary and secondary succession?

Primary succession starts with no soil, while secondary succession starts with existing soil.

Primary succession happens faster than secondary succession.

Primary succession is caused by human activities, while secondary succession is caused by natural events.

Primary succession involves only plants, while secondary succession involves both plants and animals.

What is a climax community?

A community of plants and animals that is in balance with its environment.

A community of plants and animals that are all the same species.

A community of plants and animals that is constantly changing.

A community of plants and animals that is only found in tropical rainforests.

How can understanding ecological succession help us manage ecosystems?

It helps us understand how ecosystems recover from disturbances.

It helps us predict the weather.

It helps us create new ecosystems.

It helps us control the population of certain species.

Imagine a forest fire destroys a large area, leaving behind bare soil. What type of succession would occur in this area, and what would be the first organisms to appear?

Secondary succession, with fast-growing weeds and grasses as pioneer species.

Primary succession, with lichens and mosses as pioneer species.

Secondary succession, with lichens and mosses as pioneer species.

Primary succession, with fast-growing weeds and grasses as pioneer species.

How does the process of ecological succession demonstrate the concept of 'survival of the fittest'?

The fittest organisms are the ones that can adapt to changing conditions, like the species that appear later in succession.

The fittest organisms are the ones that can survive in the harshest conditions, like lichens and mosses.

The fittest organisms are the ones that can reproduce the fastest, like weeds and grasses.

The fittest organisms are the ones that are the largest and strongest, like the trees that appear at the end of succession.

How does biodiversity make ecosystems more stable?

Biodiversity helps ecosystems adapt to changes like droughts or floods.

Biodiversity makes ecosystems more beautiful.

Biodiversity makes ecosystems easier to study.

Biodiversity makes ecosystems more likely to be affected by diseases.

What is one way that biodiversity helps keep organisms healthy?

Biodiversity helps different species compete with each other, keeping populations in check.

Biodiversity provides more food for organisms.

Biodiversity makes organisms more likely to be affected by diseases.

Biodiversity helps organisms find shelter.

Why is biodiversity especially important in stressful environments like those affected by climate change?

Stressful environments are more likely to lose species, making them even more vulnerable to changes.

Stressful environments are more likely to have a lot of biodiversity.

Stressful environments are more likely to be affected by diseases.

Stressful environments are more likely to have a lot of different types of trees.

Imagine a forest with only one type of tree. How might this lack of biodiversity affect the forest's ability to withstand a disease outbreak?

The forest would be less resistant to the disease because all the trees are susceptible.

The forest would be more resistant to the disease because all the trees are the same.

The forest would be unaffected by the disease because trees are naturally resistant.

The forest would be more likely to recover quickly from the disease because all the trees are the same.

Biodiversity is like a "giant puzzle with many different pieces, all working together to create a healthy and balanced environment." What does this analogy suggest about the importance of different species within an ecosystem?

Different species have different roles that contribute to the overall health of the ecosystem.

Different species are all equally important to the ecosystem.

Different species are all equally vulnerable to changes in the environment.

Different species compete with each other for resources.

Organisms & Environments

Authored by Malinee Carnegie

Science

6th - 8th Grade

NGSS covered

Used 9+ times

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20 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What can animals do if there is a drought?

They might have to move.

They might have to eat more.

They might have to grow bigger or get smaller.

They might have to sleep more.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are two examples of abiotic factors in an ecosystem?

Plants and animals

Sunlight and water

Bacteria and fungi

Cats and dogs

Tags

NGSS.MS-LS2-3

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does a change in temperature affect an ecosystem?

It can change the types of plants that grow there.

It can make the animals bigger.

It can make the animals smaller.

It can make the animals change color.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS1-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is one way that animals help control how much plant and bacteria life there is in an ecosystem?

By making sounds and singing songs

By building nests and burrows

By migrating to different places

By eating plants and other animals

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

NGSS.MS-LS2-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is one way that animals and plants in a tide pool have to adapt to survive?

They have to be able to fly.

They have to be able to live in both salt water and fresh water.

They have to be able to survive when the water is high and when it's low

They have to be able to eat rocks.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS4-4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does the availability of sunlight affect the plants in an ecosystem?

Sunlight makes plants move faster.

Sunlight makes plants change color.

Sunlight makes plants grow taller.

Sunlight helps plants make food.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS1-6

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does the availability of water affect the animals in an ecosystem?

Animals need water to swim.

Animals need water to make nests.

Animals need water to grow.

Animals need water to drink.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

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