NEET UG BIOLOGY MCQ: BREATHING AND EXCHANGE OF GASES

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{O_2}

exchange with

C{O_2}

by simple diffusion over the entire body surface takes place in
I. sponges II. Coelenterates III. Flatworms
Select the correct option to complete the given statement

View answer and explanation

Correct option: D

All of the above

Option D (All of the above) is correct because sponges, coelenterates, and flatworms all exchange oxygen and carbon dioxide through simple diffusion across their entire body surface.

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