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Question (21)

QN0012493

If a web model includes 10 plants, 6 herbivores and 4 carnivores, how many living things are represented in total?

(A) 18
(B) 19
(C) 20
(D) 21

Correct Answer: C

Explanation:

Total = 10 + 6 + 4 = 20

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Question (22)

QN0012494

What happens to the Web of Life when one important species disappears?

(A) Connections may weaken
(B) The web becomes stronger automatically
(C) Nothing changes
(D) More species appear instantly

Correct Answer: A

Explanation:

Loss of a species reduces links, weakening the web

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Question (23)

QN0012495

A forest has 30 food connections. If 8 are disrupted, how many remain active?

(A) 20
(B) 21
(C) 22
(D) 23

Correct Answer: C

Explanation:

30 − 8 = 22

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Question (24)

QN0012496

Which component provides food for many herbivores?

(A) Plants
(B) Rocks
(C) Clouds
(D) Sand

Correct Answer: A

Explanation:

Plants are the primary producers

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Question (25)

QN0012497

If 15 animals depend on a water source and 5 leave the area, how many animals still depend on it?

(A) 8
(B) 9
(C) 10
(D) 11

Correct Answer: C

Explanation:

15 − 5 = 10

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Question (26)

QN0012498

Why is water important in the Web of Life?

(A) Living things need it to survive
(B) It produces buildings
(C) It replaces sunlight
(D) It removes plants

Correct Answer: A

Explanation:

Water is essential for survival of all living beings

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Question (27)

QN0012499

In a model, 36 organisms are connected. If one-third are plants, how many plants are there?

(A) 10
(B) 11
(C) 12
(D) 13

Correct Answer: C

Explanation:

36 ÷ 3 = 12

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Question (28)

QN0012500

Which statement best explains ecosystem balance?

(A) Organisms support one another through connections
(B) Animals do not need plants
(C) Plants do not need sunlight
(D) Food chains are unrelated

Correct Answer: A

Explanation:

Ecosystem balance depends on interdependence

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Question (29)

QN0012501

A class creates a Web of Life using 28 strands of thread. If 7 strands break, how many strands remain?

(A) 19
(B) 20
(C) 21
(D) 22

Correct Answer: C

Explanation:

28 − 7 = 21

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Question (30)

QN0012502

Which organism is a consumer in the Web of Life?

(A) Grass
(B) Tree
(C) Deer
(D) Algae

Correct Answer: C

Explanation:

Deer depends on plants for food, so it is a consumer

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Question (21)

If a web model includes 10 plants, 6 herbivores and 4 carnivores, how many living things are represented in total?

Explanation:

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Question (22)

What happens to the Web of Life when one important species disappears?

Explanation:

Link:

Question (23)

A forest has 30 food connections. If 8 are disrupted, how many remain active?

Explanation:

Link:

Question (24)

Which component provides food for many herbivores?

Explanation:

Link:

Question (25)

If 15 animals depend on a water source and 5 leave the area, how many animals still depend on it?

Explanation:

Link:

Question (26)

Why is water important in the Web of Life?

Explanation:

Link:

Question (27)

In a model, 36 organisms are connected. If one-third are plants, how many plants are there?

Explanation:

Link:

Question (28)

Which statement best explains ecosystem balance?

Explanation:

Link:

Question (29)

A class creates a Web of Life using 28 strands of thread. If 7 strands break, how many strands remain?

Explanation:

Link:

Question (30)

Which organism is a consumer in the Web of Life?

Explanation:

Link:

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