Animal Breathing Mechanisms Quiz

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5 Questions

Which of the following is used by most aquatic arthropods and molluscs for gas exchange?

Vascularised structures called gills

How do lower invertebrates like sponges and flatworms exchange O2 with CO2?

Simple diffusion over their entire body surface

Insects use which of the following to transport atmospheric air within the body?

A network of tracheal tubes

Which respiratory organ is used by terrestrial forms for gas exchange?

Lungs

How do reptiles, birds, and mammals primarily respire?

Through lungs

Study Notes

Gas Exchange in Various Organisms

  • Most aquatic arthropods and molluscs use gills for gas exchange.

Primitive Invertebrates

  • Lower invertebrates like sponges and flatworms exchange O2 with CO2 through diffusion.

Insects

  • Insects use tracheae to transport atmospheric air within the body.

Terrestrial Forms

  • Terrestrial forms use lungs as the respiratory organ for gas exchange.

Advanced Vertebrates

  • Reptiles, birds, and mammals primarily respire using lungs.

Test your knowledge of the different breathing mechanisms among animals, from simple diffusion over body surfaces to tracheal tubes and gills. Explore how various groups of animals exchange O2 and CO2 based on their habitats and levels of organisation.

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