Question 1

What is the role of producers in an ecosystem?

Accepted Answer

They create their own food through photosynthesis.

Answer

They only consume other organisms.

Answer

They recycle nutrients in the soil.

Answer

They provide shelter for animals.

Question 2

What is a beneficial relationship between two organisms in an ecosystem called?

Accepted Answer

Mutualism

Answer

Competition

Answer

Parasitism

Answer

Commensalism

Question 3

What does the oxygen-carbon dioxide cycle primarily involve?

Accepted Answer

The exchange of oxygen and carbon dioxide between plants and animals.

Answer

The decomposition of dead organisms.

Answer

The absorption of nutrients from the soil.

Answer

The creation of energy from sunlight.

Question 4

What kind of organism is Bifidus, and what is its role in the human body?

Accepted Answer

A beneficial bacterium that aids in digestion.

Answer

A fungus that helps in nutrient absorption.

Answer

A type of plant that grows in the intestines.

Answer

A harmful virus that causes diseases.

Question 5

What do we call organisms that directly feed on producers?

Accepted Answer

Primary consumers

Answer

Tertiary consumers

Answer

Secondary consumers

Answer

Decomposers

Question 6

Which of the following describes an ecosystem?

Accepted Answer

A community of living organisms interacting with their environment.

Answer

A group of identical species living in the same area.

Answer

A collection of plants and animals in a zoo.

Answer

A single organism interacting with its surroundings.

Question 7

What process do plants use to convert sunlight into food?

Accepted Answer

Photosynthesis

Answer

Transpiration

Answer

Respiration

Answer

Decomposition

Question 8

What term describes the relationship where one organism benefits and the other is harmed?

Accepted Answer

Parasitism

Answer

Commensalism

Answer

Mutualism

Answer

Neutralism

Question 9

What role do decomposers play in an ecosystem?

Accepted Answer

They break down dead organisms and recycle nutrients back into the soil.

Answer

They produce energy through photosynthesis.

Answer

They compete with plants for sunlight.

Answer

They are primary consumers that eat plants.

Question 10

What is the main effect of pollution on ecosystems?

Accepted Answer

It disrupts the balance of the ecosystem and harms living organisms.

Answer

It helps plants grow faster.

Answer

It increases biodiversity.

Answer

It has no impact on ecosystems.

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