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

The bird population will decrease.

The bird population will increase.

The bird population will decrease.

The bird population will decrease, then increase.

The bird population will increase, then decrease.

Corals have a symbiotic relationship with plant-like algae that grow inside them. How do the algae benefit the corals?

The algae help the corals make a hard outside coating.

The algae provide the corals with various nutrients.

The algae help the corals make a hard outside coating.

The algae allow the corals to live in deep ocean environments.

The algae release a toxin that keeps predators away from the corals.

What role do decomposers play in ecosystems?

They break down waste and dead matter.

They break down nitrogen and oxygen.

They break down waste and dead matter.

They provide nutrients for carnivores to make energy.

They provide nutrients for omnivores to make energy.

Interactions In Ecosystems Test

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Jmlane

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Quizzes Created: 1 | Total Attempts: 958

Questions: 10 | Attempts: 958 | Updated: Mar 21, 2023

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5th grade quiz about energy and the food chain

Questions and Answers

1.

In an ecosystem, birds depend on insects to survive. If someone spreads pesticide to control the insect population, which of the following is most likely to happen?
- A.
  
  The bird population will increase.
- B.
  
  The bird population will decrease.
- C.
  
  The bird population will decrease, then increase.
- D.
  
  The bird population will increase, then decrease.
Correct Answer
B. The bird population will decrease.

Explanation
When someone spreads pesticide to control the insect population, it is likely to have a negative impact on the bird population. Birds depend on insects as a food source, so if the insect population decreases due to pesticide use, the birds will have less food available to them. This will lead to a decrease in the bird population as they struggle to find enough food to survive.

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2.

Corals have a symbiotic relationship with plant-like algae that grow inside them. How do the algae benefit the corals?
- A.
  
  The algae provide the corals with various nutrients.
- B.
  
  The algae help the corals make a hard outside coating.
- C.
  
  The algae allow the corals to live in deep ocean environments.
- D.
  
  The algae release a toxin that keeps predators away from the corals.
Correct Answer
B. The algae help the corals make a hard outside coating.

Explanation
The algae help the corals make a hard outside coating. This is because the algae produce calcium carbonate, which is used by the corals to build their hard exoskeletons. The algae also provide the corals with oxygen and remove waste products, further aiding in the growth and maintenance of the hard outside coating.

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1
2
3.

Look at the following diagram below. Where is the greatest amount of energy?
- A.
  
  Plant
- B.
  
  Rabbit
- C.
  
  Snake
- D.
  
  Owl
Correct Answer
A. Plant

Explanation
The greatest amount of energy is in the plant. Plants are primary producers in the food chain, meaning they convert sunlight into energy through photosynthesis. This energy is then transferred to herbivores like rabbits, who consume the plant. As energy moves up the food chain, each level loses some energy, so the greatest amount of energy is always found at the bottom of the chain, in this case, the plant.

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0
1
4.

How to carnivores obtain energy?
- A.
  
  They eat plants.
- B.
  
  They eat animals.
- C.
  
  They eat animals and plants.
- D.
  
  They eat the food they make.
Correct Answer
B. They eat animals.

Explanation
Carnivores obtain energy by eating animals. Carnivores are organisms that primarily feed on the flesh of other animals. They have adapted to have sharp teeth and claws to capture and kill their prey. By consuming the tissues of other animals, carnivores obtain the necessary nutrients and energy to survive and thrive.

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2
0
5.

What role do decomposers play in ecosystems?
- A.
  
  They break down nitrogen and oxygen.
- B.
  
  They break down waste and dead matter.
- C.
  
  They provide nutrients for carnivores to make energy.
- D.
  
  They provide nutrients for omnivores to make energy.
Correct Answer
B. They break down waste and dead matter.

Explanation
Decomposers play a crucial role in ecosystems by breaking down waste and dead matter. They break down organic material into simpler forms, such as nutrients, which can then be recycled back into the ecosystem. This process helps to release essential nutrients and minerals back into the soil, making them available for other organisms to use. Without decomposers, dead organisms and waste would accumulate, leading to a buildup of harmful substances and a lack of resources for other organisms.

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1
1
6.

All _____________________ are consumers. (plants, animals)

Correct Answer
animals

Explanation
This statement suggests that all animals are consumers. In other words, animals are organisms that obtain their energy by consuming other organisms or organic matter. This is in contrast to plants, which are typically producers, as they produce their own food through photosynthesis. Therefore, the correct answer is animals.

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1
4 1
7.

Energy can flow through an ecosystem from a producer to a(n) __________________.(producer, herbivore)

Correct Answer
herbivore

Explanation
Energy flows through an ecosystem from a producer, such as plants or algae, to a herbivore. Producers convert sunlight into chemical energy through photosynthesis, and herbivores consume these producers to obtain energy. This transfer of energy is the basis of the food chain, as herbivores are then consumed by carnivores and omnivores, allowing energy to be passed along the ecosystem.

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4 1
8.

Energy ________________ disappear. (does, does not)

Correct Answer
does not

Explanation
The statement is expressing that energy does not disappear. This means that energy cannot be created or destroyed, but it can only be transformed from one form to another. This is in accordance with the law of conservation of energy, which states that the total energy of an isolated system remains constant over time.

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9.

When new plants and animals are introduced into an ecosystem, they can cause changes. Suppose that people bring to an area a type of plant not normally found there. The new plants grow quickly in their new environment. What is one possible effect of the new plants on the plants that were already growing in the area? What might happen to herbivores that eat only the plants that were growing there? Explain your answers.
10.

Use the diagram of the food web below to describe the flow of energy in a food chain. Include at least three organisms in your description of the food chain. Identify each organism in your food chain as a producer, herbivore, omnivore, carnivore or decomposer.

Interactions In Ecosystems Test

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

Corals have a symbiotic relationship with plant-like algae that grow inside them. How do the algae benefit the corals?

Look at the following diagram below. Where is the greatest amount of energy?

How to carnivores obtain energy?

What role do decomposers play in ecosystems?

All _____________________ are consumers. (plants, animals)

Energy can flow through an ecosystem from a producer to a(n) __________________.(producer, herbivore)

Energy ________________ disappear. (does, does not)

Use the diagram of the food web below to describe the flow of energy in a food chain. Include at least three organisms in your description of the food chain. Identify each organism in your food chain as a producer, herbivore, omnivore, carnivore or decomposer.