NSO Level 1- Science Olympiad (SOF) Class 7: Questions 501 - 506 of 593

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Question number: 501

» Winds, Storms and Cyclones

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MCQ▾

Question

Which of the following is installed in a building when lightning strikes the building?

Choices

Choice (4) Response

a.

Lightning insulator

b.

Lightning conductor

c.

Lightning repeller

d.

All of the above

Question number: 502

» Respiration in Organisms

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MCQ▾

Question

Which of the following is true? Select the correct option.

Choices

Choice (4) Response

a.

Oxygen breaks down the glucose inside cells.

b.

Insects have spiracles on the lower surface of the body.

c.

Frogs can breathe only through their skin.

d.

Inhaled air has more percentage of CO2 then exhaled air.

Question number: 503

» Respiration in Organisms

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MCQ▾

Question

Which of the following is true about stomata in plants during respiration?

Choices

Choice (4) Response

a.

Stomata open and close to take in O2 and release CO2.

b.

Stomata open and close to take in CO2.

c.

Stomata remains closed and gas exchange occurs any time.

d.

None of the above

Question number: 504

» Reproduction in Plants

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MCQ▾

Question

Male gamete released in ovule fuse with which of the following?

Choices

Choice (4) Response

a.

Two polar nuclei

b.

Egg

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

Question number: 505

» Reproduction in Plants

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MCQ▾

Question

Which of the following is the structure formed during the transfer of pollen from stigma to ovary?

Choices

Choice (4) Response

a.

Pistil

b.

Pollen tube

c.

Style

d.

None of the above

Question number: 506

» Reproduction in Plants

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MCQ▾

Question

Which of the following defines the sexual reproduction?

Choices

Choice (4) Response

a.

Fragmentation

b.

Fusion of gametes

c.

Bud formation

d.

None of the above

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