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1 / 5

Category: General Science

The primary reason mammals like humans cannot breathe underwater is:

They lack gills for extracting oxygen from water.

Their lungs are too small and lack the surface area for efficient gas exchange in water.

They are warm-blooded and cannot regulate their body temperature in water.

They lack the buoyancy control mechanisms like swim bladders found in fish.

2 / 5

Category: General Studies

What is a major challenge for mammals breathing underwater due to buoyancy?

They would experience increased pressure leading to decompression sickness.

The lack of air in their lungs would make them sink uncontrollably.

The presence of air in their lungs would make them float uncontrollably, hindering movement.

Breathing underwater would expose them to harmful bacteria and parasites not present in air.

3 / 5

Category: General Science

Which statement is TRUE about lung adaptations in mammals compared to fish gills?

Lungs are more complex and require less energy to extract oxygen from water.

Gills have a significantly larger surface area for efficient gas exchange in water.

Lungs actively pump water for oxygen extraction, similar to fish gills.

Mammal lungs can directly utilize dissolved nitrogen from water for respiration.

4 / 5

Category: General Science

Which evolutionary trade-off likely played a role in mammals developing lungs instead of gills?

Gills are more complex and require more energy to maintain compared to lungs.

Lungs were more advantageous for thermoregulation and efficient movement on land.

Mammals primarily evolved from aquatic ancestors that already had functional lungs.

The presence of predators in water made land a safer environment for mammal survival.

5 / 5

Category: General Science

How does the availability of oxygen differ between air and water, impacting mammalian breathing?

Water contains significantly more oxygen than air, making underwater breathing easier.

The concentration of oxygen in water is much lower than in air, limiting efficient extraction.

Both air and water have roughly the same oxygen concentration, making breathing equally efficient.

Mammals can directly utilize dissolved nitrogen from water, negating the need for oxygen.

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Attempt Today’s Quiz on Science Topic: How can fish breathe underwater?

Quiz by examlife.info — Science

Regular GS Daily Questions:-

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Read the Below Instructions Carefully:

The primary reason mammals like humans cannot breathe underwater is:

What is a major challenge for mammals breathing underwater due to buoyancy?

Which statement is TRUE about lung adaptations in mammals compared to fish gills?

Which evolutionary trade-off likely played a role in mammals developing lungs instead of gills?

How does the availability of oxygen differ between air and water, impacting mammalian breathing?

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Attempt Today’s Quiz on Science Topic: How can fish breathe underwater?

Quiz by examlife.info — Science

Regular GS Daily Questions:-

Are you Ready!

Thank you, Time Out !

Read the Below Instructions Carefully:

The primary reason mammals like humans cannot breathe underwater is:

What is a major challenge for mammals breathing underwater due to buoyancy?

Which statement is TRUE about lung adaptations in mammals compared to fish gills?

Which evolutionary trade-off likely played a role in mammals developing lungs instead of gills?

How does the availability of oxygen differ between air and water, impacting mammalian breathing?

Check Rank, Result Now and enter correct email as you will get Solutions in the email as well for future use!

Please Rate!

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Pos.NameDurationPoints 1Rajat8 seconds0 / 5

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Pos. Name Duration Points

1 Rajat 8 seconds 0 / 5