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Question (1)

QN0036222

1 What is an ecosystem?

(A) Only the living organisms in an area
(B) Only the physical surroundings of an area
(C) Interacting organisms together with the non-living components of their environment
(D) Only plants and animals

Correct Answer: C

Explanation:

An ecosystem consists of interacting living organisms and non-living components.

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Question (2)

QN0036223

2 Which of the following is an abiotic component of an ecosystem?

(A) Plants
(B) Animals
(C) Temperature
(D) Bacteria

Correct Answer: C

Explanation:

Temperature is a physical, non-living factor and is therefore abiotic.

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Question (3)

QN0036224

3 Which of the following is a biotic component?

(A) Soil
(B) Minerals
(C) Rainfall
(D) Plants

Correct Answer: D

Explanation:

Plants are living organisms and form biotic components.

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Question (4)

QN0036225

4 Which of the following is an example of a natural ecosystem?

(A) Aquarium
(B) Crop-field
(C) Garden
(D) Pond

Correct Answer: D

Explanation:

Ponds, lakes and forests are examples of natural ecosystems.

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Question (5)

QN0036226

5 Which of the following is a human-made ecosystem?

(A) Forest
(B) Lake
(C) Garden
(D) Pond

Correct Answer: C

Explanation:

Gardens and crop-fields are human-made ecosystems.

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Question (6)

QN0036227

6 Why is an aquarium considered a human-made ecosystem?

(A) It contains only plants
(B) It is designed and maintained by humans
(C) It contains no living organisms
(D) It exists naturally in forests

Correct Answer: B

Explanation:

An aquarium is created by humans and can contain aquatic plants and animals.

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Question (7)

QN0036228

7 Which organisms can prepare food from inorganic substances using sunlight and chlorophyll?

(A) Consumers
(B) Decomposers
(C) Producers
(D) Parasites

Correct Answer: C

Explanation:

Producers such as green plants make food by photosynthesis.

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Question (8)

QN0036229

8 Which organisms depend directly or indirectly on producers for food?

(A) Consumers
(B) Abiotic factors
(C) Minerals
(D) Soil particles

Correct Answer: A

Explanation:

Consumers obtain food directly from producers or indirectly by eating other consumers.

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Question (9)

QN0036230

9 Which of the following is a type of consumer?

(A) Herbivore
(B) Producer
(C) Decomposer
(D) Mineral

Correct Answer: A

Explanation:

Herbivores are consumers that depend on plants for food.

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Question (10)

QN0036231

10 What is the main role of decomposers?

(A) Produce sunlight
(B) Break down dead remains and wastes
(C) Produce oxygen only
(D) Eat only living plants

Correct Answer: B

Explanation:

Bacteria and fungi break down dead remains and waste products.

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Question (1)

1 What is an ecosystem?

Explanation:

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Question (2)

2 Which of the following is an abiotic component of an ecosystem?

Explanation:

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Question (3)

3 Which of the following is a biotic component?

Explanation:

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Question (4)

4 Which of the following is an example of a natural ecosystem?

Explanation:

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Question (5)

5 Which of the following is a human-made ecosystem?

Explanation:

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Question (6)

6 Why is an aquarium considered a human-made ecosystem?

Explanation:

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Question (7)

7 Which organisms can prepare food from inorganic substances using sunlight and chlorophyll?

Explanation:

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Question (8)

8 Which organisms depend directly or indirectly on producers for food?

Explanation:

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Question (9)

9 Which of the following is a type of consumer?

Explanation:

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Question (10)

10 What is the main role of decomposers?

Explanation:

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