EMBRYOLOGY
RESPIRATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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For the proper diffusion of gases into and out of animals it is necessary that the body walls, gills or lungs ____
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be moist
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have a blood circulatory system
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be very small
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have many partitions
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Explanation:
Detailed explanation-1: -The universal answer given to the question ‘Why do large animals have lungs, gills, or other structures specialized for gaseous exchange while smaller animals manage by diffusion? ‘ is that the larger an organism the smaller its surface area to volume ratio.
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