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  • Which statement regarding lesser invertebrates, such as sponges, coelenterates, flatworms, etc., is accurate?Option: 1 They excha

Which statement regarding lesser invertebrates, such as sponges, coelenterates, flatworms, etc., is accurate?

Option: 1

They exchange gas through their lungs.
 


Option: 2

To move atmospheric air inside the body, they have a system of tubes.


Option: 3

They just diffuse CO2 and O2 throughout the surface of their entire body.

 


Option: 4

They exchange gases using vascularized bags.


Answers (1)

best_answer

The process through which lower invertebrates such as sponges, coelenterates, flatworms, etc. exchange O2 with CO2 across their whole body surface is called simple diffusion.

 Option 3 is the correct answer.

Posted by

manish

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