NSO Level 1- Science Olympiad (SOF) Class 9: Questions 234 - 238 of 1123

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Question number: 234

» Biology » Natural Resources

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MCQ▾

Question

Vegetation succession is

Choices

Choice (4) Response

a.

Series of changes of vegetation cover of a particular area taking place over a period of time

b.

Depletion of oxygen in a water reservoir because of algal bloom

c.

Absorption of heat from the radiated energy from the surface of Earth and re-radiating back to the Earth

d.

Question does not provide sufficient data or is vague

Question number: 235

» Biology » Natural Resources

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MCQ▾

Question

Hydro energy is utilized in

Choices

Choice (4) Response

a.

Generation of electricity

b.

Generation of solar energy

c.

Generation of thermal pan

d.

Question does not provide sufficient data or is vague

Question number: 236

» Biology » Improvement in Food Resources

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MCQ▾

Question

Which of the following is known as molecular scissors?

Choices

Choice (4) Response

a.

Topoisomerase

b.

Restriction endonuclease

c.

DNA polymerase

d.

DNA Ligase

Question number: 237

» Biology » Improvement in Food Resources

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Match List-Ⅰ List-Ⅱ▾

Question

Match the following.

List-Ⅰ (Column I) List-Ⅱ (Column II)

(A)

Chlorophyll

(i)

Agrobacterium tumefaciens

(B)

Ti plasmid

(ii)

Mn

(C)

Splitting of water molecule in photosynthesis

(iii)

Molybdenum

(D)

Micronutrient of plant

(iv)

Mg

Choices

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

a.

  • (iv)
  • (ii)
  • (iii)
  • (i)

b.

  • (ii)
  • (iv)
  • (i)
  • (iii)

c.

  • (iv)
  • (i)
  • (ii)
  • (iii)

d.

  • (i)
  • (iii)
  • (iv)
  • (ii)

Question number: 238

» 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)

Disadvantages of mining

(i)

Death due to collapsing of roof top

(B)

Open cast mining

(ii)

Almost all types of pollution

(C)

Deep mining

(iii)

Development of secondary sectors

(D)

Advantages of mining

(iv)

Hampered scenic beauty

Choices

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

a.

  • (i)
  • (iv)
  • (iii)
  • (ii)

b.

  • (ii)
  • (iv)
  • (i)
  • (iii)

c.

  • (ii)
  • (iii)
  • (i)
  • (iv)

d.

  • (iv)
  • (ii)
  • (i)
  • (iii)

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