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Question (1)

QN0034502

An ecosystem provides food, water, and other useful resources to living organisms. These benefits are called ________.

(A) ecosystem services
(B) adaptations
(C) food chains
(D) habitats

Correct Answer: A

Explanation:

Ecosystem services are the benefits provided by ecosystems.

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Question (2)

QN0034503

Which of the following is a direct benefit provided by ecosystems?

(A) Oxygen production
(B) Plastic production
(C) Metal formation
(D) Concrete making

Correct Answer: A

Explanation:

Plants in ecosystems produce oxygen.

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Question (3)

QN0034504

A forest produces 2,400 kg of fruits in a season. If villagers collect 750 kg, how much fruit remains in the forest?

(A) 1450 kg
(B) 1550 kg
(C) 1650 kg
(D) 1750 kg

Correct Answer: C

Explanation:

2400 − 750 = 1650 kg.

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Question (4)

QN0034505

Which ecosystem benefit helps maintain breathable air?

(A) Oxygen production by plants
(B) Soil erosion
(C) Rock weathering
(D) Plastic recycling

Correct Answer: A

Explanation:

Plants release oxygen during photosynthesis.

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Question (5)

QN0034506

Ecosystems help purify ________, making it safer for organisms to use.

(A) water
(B) metal
(C) glass
(D) plastic

Correct Answer: A

Explanation:

Ecosystems such as wetlands help purify water.

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Question (6)

QN0034507

A wetland filters 900 litres of water daily. How much water does it filter in 7 days?

(A) 5400 L
(B) 6000 L
(C) 6300 L
(D) 7200 L

Correct Answer: C

Explanation:

900 × 7 = 6300 L.

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Question (7)

QN0034508

Which ecosystem benefit helps crops reproduce by transferring pollen?

(A) Pollination
(B) Decomposition
(C) Predation
(D) Migration

Correct Answer: A

Explanation:

Pollination helps plants reproduce.

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Question (8)

QN0034509

The exact term for the natural process of transferring pollen from one flower to another is ________.

(A) germination
(B) pollination
(C) respiration
(D) decomposition

Correct Answer: B

Explanation:

Pollination transfers pollen between flowers.

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Question (9)

QN0034510

A garden has 120 flowering plants. Pollinators help 90 of them produce fruits. What percentage of plants produce fruits?

(A) 60%
(B) 70%
(C) 75%
(D) 80%

Correct Answer: C

Explanation:

(90/120) × 100 = 75%.

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Question (10)

QN0034511

Which ecosystem benefit helps in recycling nutrients back to the soil?

(A) Decomposition
(B) Pollination
(C) Camouflage
(D) Migration

Correct Answer: A

Explanation:

Decomposition returns nutrients to the soil.

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Question (1)

An ecosystem provides food, water, and other useful resources to living organisms. These benefits are called ________.

Explanation:

Link:

Question (2)

Which of the following is a direct benefit provided by ecosystems?

Explanation:

Link:

Question (3)

A forest produces 2,400 kg of fruits in a season. If villagers collect 750 kg, how much fruit remains in the forest?

Explanation:

Link:

Question (4)

Which ecosystem benefit helps maintain breathable air?

Explanation:

Link:

Question (5)

Ecosystems help purify ________, making it safer for organisms to use.

Explanation:

Link:

Question (6)

A wetland filters 900 litres of water daily. How much water does it filter in 7 days?

Explanation:

Link:

Question (7)

Which ecosystem benefit helps crops reproduce by transferring pollen?

Explanation:

Link:

Question (8)

The exact term for the natural process of transferring pollen from one flower to another is ________.

Explanation:

Link:

Question (9)

A garden has 120 flowering plants. Pollinators help 90 of them produce fruits. What percentage of plants produce fruits?

Explanation:

Link:

Question (10)

Which ecosystem benefit helps in recycling nutrients back to the soil?

Explanation:

Link:

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