A population of small fish and a population of small squids eat the same type of krill (a type of plant) in the same ecosystem. Krill is the main source of food for both the fish and squid. If the squid grows faster than the fish population, what will most likely happen to the fish population?

The fish population will get smaller or even die out.

The fish population will stay the same size.

The fish population will start to grow faster.

The fish population will start to eat more krill than the squids.

What role do bacteria play in a pond ecosystem?

Bacteria are decomposers of dead plants and animals.

Bacteria are herbivores that make their own food in the ecosystem.

Bacteria act as consumers of live fish.

Bacteria provide food for frogs.

Skunks live in North America. When they are threatened, they spray a strong-smelling liquid at predators to scare them away. When rabbits find themselves in trouble, their instinct is to run away as fast as they can. They use their speed and quickness to escape. Although these two animals are different, which of the following is one way in which they are the same?

They have adapted ways to protect themselves.

They spend a lot of time in trees.

They both use speed to escape enemies.

Fighting predators is their weakness.

Which of the following best describes the roles of bacteria and other microorganisms in an ecosystem?

They perform many valuable jobs in an ecosystem, including decomposition.

They all cause life-threatening diseases in animals, including humans.

They are too small to have any effect o the rest of the ecosystem.

They are all parasites, taking the food from plants and animals.

Why are decomposers necessary in the food chain?

They provide nutrients for plants.

Why are tropical rain forests found along the equator?

There is warm, moist air in this part of the world.

These areas are very close to the ocean.

The westerly winds bring a lot of rain clouds.

How is wind an important factor to the ecosystem?

It carries seeds to knew locations.

It helps propel the water cycle.

What is an ecosystem?

A community of living and nonliving things interacting with each other

The community of non living thing

What would most likely result if all plants in an area were destroyed?

Consumer populations would decrease because plants provide them with energy.

Consumer populations would increase because more sunlight would reach the ground.

Decomposer populations would increase because more sunlight would reach the ground.

Consumer populations would decrease because plants provide them with water.

What would most likely happen if all of the decomposers in an ecosystem were removed?

The plants in the ecosystem would eventually die because of a lack of nutrients in the soil.

The animals in the ecosystem would die because of the spread of disease.

The plants in the ecosystem would begin to die out because of a decrease in available water.

The animals in the ecosystem would eat other types of food because of a decrease in producers.

A food chain in an ecosystem includes blackberry bushes, deer, and wolves. • Deer eat blackberries. • Wolves eat deer. If the population of wolves decreases, how will this affect the population of blackberry bushes?

It will decrease because there will be more deer.

It will decrease because there will be fewer deer.

It will increase because there will be fewer deer.

It will increase because there will be more deer.

What is the role of a producer?

to make food for themselves and other organisms

to make carbon dioxide & oxygen

Which of the following statements best describes a decomposer?

They are biotic and break down dead material.

They are abiotic and only eat producers that are biotic.

They are abiotic and eat both plants and animals.

They consume other biotic things for energy.

In an ecosystem, many birds depend on insects. If pesticide is spread to control the insect population, which of the following will most likely happen?

The bird population will decrease.

The bird population will increase.

The bird population will increase then decrease.

The bird population will decrease then increase.

Plants, animals, and microscopic organisms

Living things and their physical surroundings

ecosystem review

Authored by Caroline Fongemy

Biology

5th Grade

NGSS covered

Used 23+ times

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62 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The way living organisms interact with each other in a particular environment/community is called...

Ecosystem

Biome

Habitat

Abiotic

Tags

NGSS.MS-LS2-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Non-living things that are a part of a biome is called...

Habitat

Abiotic

Biotic

Ecosystem

Tags

NGSS.MS-LS2-3

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which one of these is an abiotic factor?

grass

tree

water

soil

Tags

NGSS.MS-LS2-3

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which belongs to aquatic biome?

estuary

savannah

prairie

tundra

Tags

NGSS.MS-ESS2-4

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

What do consumers do in the food chain?

They obtain energy from other organisms.

They break down dead plant and animal material.

They use sunlight to make food.

They are parasites of plants.

Tags

NGSS.MS-LS2-3

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Many cactus plants have very sharp needles and thorns. How does this help them survive in a desert environment?

Birds do not build their nests in cactus plants because of the needles.

The needles and thorns allow the cactus plants to lose excess heat.

Thirsty animals will not eat the cactus plants to get the water they contain.

The needles and thorns help the cactus plants spread their seeds.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS1-5

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Why are decomposers in the soil important?

Decomposers in the soil convert carbon dioxide to sugars.

Decomposers in the soil provide oxygen for plants.

Decomposers in the soil provide energy for animals.

Decomposers in the soil return carbon and nitrogen to the ecosystem.

Tags

NGSS.MS-LS2-3

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ecosystem review

The way living organisms interact with each other in a particular environment/community is called...

Non-living things that are a part of a biome is called...

Which one of these is an abiotic factor?

Which belongs to aquatic biome?

What do consumers do in the food chain?

Many cactus plants have very sharp needles and thorns. How does this help them survive in a desert environment?

Why are decomposers in the soil important?

A population of small fish and a population of small squids eat the same type of krill (a type of plant) in the same ecosystem. Krill is the main source of food for both the fish and squid. If the squid grows faster than the fish population, what will most likely happen to the fish population?

Which of the following food chains shows the correct energy flow left to right?

What role do bacteria play in a pond ecosystem?

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