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Question (31)

QN0010362

Why is pollution harmful to aquatic life?

(A) It can reduce oxygen and harm organisms.
(B) It increases fish growth instantly.
(C) It creates more habitats.
(D) It improves water quality.

Correct Answer: A

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Question (32)

QN0010363

A pond contains 200 fish. If 15 fish are moved to another pond, how many remain?

(A) 175
(B) 180
(C) 185
(D) 190

Correct Answer: C

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Question (33)

QN0010364

Which Indian water body is famous for supporting rich aquatic biodiversity?

(A) Thar Desert
(B) Chilika Lake
(C) Aravalli Range
(D) Deccan Plateau

Correct Answer: B

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Question (34)

QN0010365

A lake has 500 aquatic plants. If 10% increase during a season, how many plants are added?

(A) 25
(B) 40
(C) 50
(D) 60

Correct Answer: C

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Question (35)

QN0010366

Which statement best explains the relationship between aquatic plants and animals?

(A) Aquatic plants help provide oxygen and shelter.
(B) Aquatic plants remove all oxygen.
(C) Aquatic animals do not need plants.
(D) Plants and animals never interact.

Correct Answer: A

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Question (36)

QN0010367

If 3 ponds contain 40, 55 and 65 fish respectively, how many fish are there altogether?

(A) 140
(B) 150
(C) 160
(D) 170

Correct Answer: C

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Question (37)

QN0010368

Which action best supports aquatic life in a community?

(A) Throwing waste into ponds
(B) Protecting water bodies from pollution
(C) Draining lakes completely
(D) Removing aquatic plants unnecessarily

Correct Answer: B

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Question (38)

QN0010369

A fish population increases from 80 to 120. By how many fish has the population increased?

(A) 20
(B) 30
(C) 40
(D) 50

Correct Answer: C

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Question (39)

QN0010370

What is the main reason aquatic animals are suited to water habitats?

(A) They possess special adaptations for water.
(B) They can survive without water.
(C) They do not need oxygen.
(D) They never move.

Correct Answer: A

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Question (40)

QN0010371

Which example best represents Bridging Science and Society related to life in water?

(A) Community efforts to keep lakes and ponds clean for aquatic organisms
(B) Collecting stones from riverbanks
(C) Measuring road lengths
(D) Observing clouds without action

Correct Answer: A

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Question (31)

Why is pollution harmful to aquatic life?

Explanation:

Link:

Question (32)

A pond contains 200 fish. If 15 fish are moved to another pond, how many remain?

Explanation:

Link:

Question (33)

Which Indian water body is famous for supporting rich aquatic biodiversity?

Explanation:

Link:

Question (34)

A lake has 500 aquatic plants. If 10% increase during a season, how many plants are added?

Explanation:

Link:

Question (35)

Which statement best explains the relationship between aquatic plants and animals?

Explanation:

Link:

Question (36)

If 3 ponds contain 40, 55 and 65 fish respectively, how many fish are there altogether?

Explanation:

Link:

Question (37)

Which action best supports aquatic life in a community?

Explanation:

Link:

Question (38)

A fish population increases from 80 to 120. By how many fish has the population increased?

Explanation:

Link:

Question (39)

What is the main reason aquatic animals are suited to water habitats?

Explanation:

Link:

Question (40)

Which example best represents Bridging Science and Society related to life in water?

Explanation:

Link:

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