NSO Level 1- Science Olympiad (SOF) Class 9: Questions 161 - 165 of 1123

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Question number: 161

» Biology » Natural Resources

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MCQ▾

Question

Which of the following layer of soil contains humus?

Choices

Choice (4) Response

a.

C & R Horizon

b.

O Horizon

c.

A & B Horizon

d.

Question does not provide sufficient data or is vague

Question number: 162

» Biology » Natural Resources

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MCQ▾

Question

Global warming is

Choices

Choice (4) Response

a.

Anthropogenic activities

b.

Natural calamities

c.

Caused by high amount of greenhouse gases

d.

All a. , b. and c. are correct

Question number: 163

» Biology » Natural Resources

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Match List-Ⅰ List-Ⅱ▾

Question

Match the following.

List-Ⅰ (Column I) List-Ⅱ (Column II)

(A)

Atomic energy

(i)

Limited human activity with due permission

(B)

Core zone

(ii)

Uranium

(C)

Transition zone

(iii)

Area of co-operation

(D)

Buffer zone

(iv)

Undisturbed, legally protected region

Choices

Choice (4) Response
  • (A)
  • (B)
  • (C)
  • (D)

a.

  • (i)
  • (ii)
  • (iv)
  • (iii)

b.

  • (iv)
  • (i)
  • (ii)
  • (iii)

c.

  • (ii)
  • (iv)
  • (iii)
  • (i)

d.

  • (iii)
  • (i)
  • (iv)
  • (ii)

Question number: 164

» Biology » Natural Resources

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Match List-Ⅰ List-Ⅱ▾

Question

Match the following.

List-Ⅰ (Column I) List-Ⅱ (Column II)

(A)

Photosynthesis

(i)

Carbon dioxide cycle

(B)

Greenhouse effect

(ii)

Conversion of nitrates into nitrogen

(C)

Denitrification

(iii)

Global warming

(D)

Decomposition

(iv)

Conversion of macromolecules into micromolecules

Choices

Choice (4) Response
  • (A)
  • (B)
  • (C)
  • (D)

a.

  • (i)
  • (iii)
  • (iv)
  • (ii)

b.

  • (i)
  • (iii)
  • (ii)
  • (iv)

c.

  • (i)
  • (iv)
  • (iii)
  • (ii)

d.

  • (ii)
  • (i)
  • (iii)
  • (iv)

Question number: 165

» Biology » Natural Resources

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MCQ▾

Question

Afforestation means

Choices

Choice (4) Response

a.

Extensive plantation of trees

b.

Soil erosion

c.

Changes in water pollution

d.

Removal of trees

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