NSO Level 1- Science Olympiad (SOF) Class 12: Questions 81 - 85 of 106

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Question 81

Question

MCQ▾

The diagram shows a pyramid of biomass.

The Diagram Shows a Pyramid of Biomass

Which organisms are found in position Q?

Choices

Choice (4)Response

a.

Decomposers

b.

Primary consumers

c.

Producers

d.

Primary regulator

Question 82

Question

MCQ▾

DNA acts as a template for synthesis of

Choices

Choice (4)Response

a.

Only Protein

b.

RNA

c.

DNA

d.

Both b. and c. are correct

Question 83

Question

MCQ▾

The graph shows the number of pregnancies in four groups of 100 women. Each group used a different method of contraception.

The Graph Shows the Number of Pregnancies in Four Groups of …

The method of contraception, which is the most effective, is

Choices

Choice (4)Response

a.

Natural

b.

Surgical

c.

Barrier

d.

Chemical

Question 84

Question

MCQ▾

Penicillin is an antibiotic that kills bacteria by preventing them from forming cell walls, which is made up of peptidoglycan.

Why does penicillin not affect viruses?

Choices

Choice (4)Response

a.

Viruses do not have cell walls.

b.

Viruses do not contain nucleus.

c.

Viruses show resistant against penicillin.

d.

Viruses reproduce very rapidly.

Question 85

Question

MCQ▾

Which method of birth control involves a surgical procedure?

Choices

Choice (4)Response

a.

IUDs

b.

Vasectomy

c.

Condom

d.

Contraceptive pill

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