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Question (11)

QN0011243

Why was Silent Valley given its name according to the chapter?

(A) No birds lived there
(B) It lacked the usual cicada sounds of rainforests
(C) No rivers flowed there
(D) No trees grew there

Correct Answer: B

Explanation:

B. The absence of the usual cicada sounds led to its name.

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Question (12)

QN0011244

The Save Silent Valley Movement helped to stop the construction of a:

(A) Highway
(B) Railway line
(C) Dam
(D) Airport

Correct Answer: C

Explanation:

C. The movement opposed a dam project.

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Question (13)

QN0011245

Protected areas are special places kept safe mainly to protect:

(A) Factories
(B) Nature, plants and animals
(C) Shopping centres
(D) Sports grounds

Correct Answer: B

Explanation:

B. Protected areas conserve biodiversity.

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Question (14)

QN0011246

The Western Ghats have over 50 protected areas such as:

(A) Wildlife sanctuaries and national parks
(B) Industrial zones
(C) Desert camps
(D) Ports

Correct Answer: A

Explanation:

A. These include wildlife sanctuaries and national parks.

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Question (15)

QN0011247

If 48 students participate in a biodiversity survey and work in groups of 6, how many groups are formed?

(A) 6
(B) 7
(C) 8
(D) 9

Correct Answer: C

Explanation:

C. 48 ÷ 6 = 8.

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Question (16)

QN0011248

A survey records 200 mango varieties. If 50 are studied in detail, what fraction are studied?

(A) 1/2
(B) 1/3
(C) 1/4
(D) 1/5

Correct Answer: C

Explanation:

C. 50/200 = 1/4.

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Question (17)

QN0011249

A forest guide spots 18 lion-tailed macaques and later sees 7 more. How many are observed altogether?

(A) 23
(B) 24
(C) 25
(D) 26

Correct Answer: C

Explanation:

C. 18 + 7 = 25.

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Question (18)

QN0011250

A student records 36 medicinal plants. If 12 are rare, how many are not rare?

(A) 22
(B) 23
(C) 24
(D) 25

Correct Answer: C

Explanation:

C. 36 − 12 = 24.

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Question (19)

QN0011251

A team collects information about 54 fruit varieties. If they are divided equally among 6 students, how many varieties does each student study?

(A) 7
(B) 8
(C) 9
(D) 10

Correct Answer: C

Explanation:

C. 54 ÷ 6 = 9.

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Question (20)

QN0011252

A protected area contains 45 elephants and 15 tigers. How many animals are there altogether?

(A) 50
(B) 55
(C) 60
(D) 65

Correct Answer: C

Explanation:

C. 45 + 15 = 60.

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Question (11)

Why was Silent Valley given its name according to the chapter?

Explanation:

Link:

Question (12)

The Save Silent Valley Movement helped to stop the construction of a:

Explanation:

Link:

Question (13)

Protected areas are special places kept safe mainly to protect:

Explanation:

Link:

Question (14)

The Western Ghats have over 50 protected areas such as:

Explanation:

Link:

Question (15)

If 48 students participate in a biodiversity survey and work in groups of 6, how many groups are formed?

Explanation:

Link:

Question (16)

A survey records 200 mango varieties. If 50 are studied in detail, what fraction are studied?

Explanation:

Link:

Question (17)

A forest guide spots 18 lion-tailed macaques and later sees 7 more. How many are observed altogether?

Explanation:

Link:

Question (18)

A student records 36 medicinal plants. If 12 are rare, how many are not rare?

Explanation:

Link:

Question (19)

A team collects information about 54 fruit varieties. If they are divided equally among 6 students, how many varieties does each student study?

Explanation:

Link:

Question (20)

A protected area contains 45 elephants and 15 tigers. How many animals are there altogether?

Explanation:

Link:

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