The primary reason that plants are important for an ecosystem is because they

depend on other organisms for shelter.

Which statement BEST describes the energy transfer of organisms eating other organisms?

Less energy is available to higher consumer levels.

More energy is available after each transfer.

Energy transfer is greatest among primary consumers.

Energy transfer to secondary consumers is greater than to primary consumers.

A marsh food chain is shown. According to the food chain, how would an increase in the toad population MOST likely affect the other populations?

The grasshopper population would decrease.

The grass population would decrease.

The hawk population would decrease.

The snake population would decrease.

Use the food chain to answer the question that follows. What would happen if the frogs were suddenly removed from the food chain?

The grasshopper population would increase.

The snake population would begin feeding on grasshoppers.

The owl population would increase.

The clover population would be unaffected.

The diagram shows a simple food web. This food web can show that grass is

a source of energy for consumers

a predator of other living things.

Nicole was studying different ecosystems. She compared the number of plants living in a forest to those in a desert. Which factor BEST explains why more plants may survive in a forest?

There is more rain in the forest.

There is more oxygen in the forest.

There is more sunlight in the forest.

There is more competition in the forest.

Which of these BEST describes biomes?

large ecosystems that have distinctive organisms and a particular climate

a group of individuals of the same species that live together in the same area

a system made up of parts that work together

external conditions that affect an organism

As a habitat with a small pond goes through a long drought, which of these is MOST likely to happen to many of the fish in the pond?

They would be unable to survive.

They would adapt to the dry environment.

They would live on other sources of water.

They would move to another habitat.

Which of these is an abiotic element in an ecosystem?

the average yearly rainfall in the ecosystem

the types of producers found in the ecosystem

the size of a predator population in the ecosystem

the microorganisms living in the soil of the ecosystem

Which statement BEST explains why few plants grow on a tropical rainforest floor?

Layers of trees keep sunlight from reaching the forest floor.

Heavy rains fall throughout the year.

Temperatures in a tropical rainforest stay warm.

Many different kinds of animals live on a rainforest floor.

6.L.2.1 & 2.3 Energy Flow & Biomes (snet)

Authored by Beth Dietzen

Biology

6th Grade

NGSS covered

Used 4+ times

6.L.2.1 & 2.3 Energy Flow & Biomes (snet)

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Examples of some organisms found in a forest ecosystem are shown. How would energy MOST likely flow between the organisms?

grasshopper, frog, snake, hawk

hawk, snake, grasshopper, frog

snake, grasshopper, frog, hawk

frog, grasshopper, hawk, snake

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does a plant need to make sugar through photosynthesis?

soil, water, and oxygen

oxygen, sunlight, and soil

carbon dioxide, sunlight, and soil

sunlight, water, and carbon dioxide

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which BEST describes how earthworms improve soil as they eat dead plant material?

They make the soil clean.

They keep disease out of the soil.

They recycle nutrients into the soil.

They remove extra water from the soil.

Tags

NGSS.MS-LS2-3

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of these is the primary source of energy in food webs?

soil

sunlight

producer

consumer

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Greg was studying a forest ecosystem. He placed some of the animals he studied in an energy pyramid. Based on Greg’s energy pyramid, which organisms contain the MOST energy?

the wolves

the weasels

the beetles

the trees

Tags

NGSS.MS-LS2-3

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Animals depend on plants for many things, including food. What do plants depend on from animals?

energy for photosynthesis

pest control

carbon dioxide

oxygen

Tags

NGSS.MS-LS2-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

As the hawk population increases in an ecosystem, the deer mouse population will MOST likely decrease as a result of

decrease in food source

increase in disease.

increase in predators.

decrease in habitat.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

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6.L.2.1 & 2.3 Energy Flow & Biomes (snet)

Examples of some organisms found in a forest ecosystem are shown. How would energy MOST likely flow between the organisms?

What does a plant need to make sugar through photosynthesis?

Which BEST describes how earthworms improve soil as they eat dead plant material?

Which of these is the primary source of energy in food webs?

Greg was studying a forest ecosystem. He placed some of the animals he studied in an energy pyramid. Based on Greg’s energy pyramid, which organisms contain the MOST energy?

Animals depend on plants for many things, including food. What do plants depend on from animals?

As the hawk population increases in an ecosystem, the deer mouse population will MOST likely decrease as a result of

In this model of a food chain, which organism is a producer?

The diet of a brown bear includes roots, grasses, berries, nuts, fish, insects, and mammals. Based on this description, in what category is a brown bear?

Which organisms make energy available to all other organisms in a food chain?

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