Q3 of 45 Page 168

What is the essential feature of respiratory organ of different terrestrial animals?

The essential feature of respiratory organs of terrestrial animals is that they must be protected under layers of tissue so as to avoid any shock or damage. They must also be supplied with a large number of blood vessels for easy and fast exchange of gases.


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1

Respiratory surface of animals must always be moist. Why?

 2

Why does the rate of breathing in aquatic animals is faster than others?

 4

The surface across which breathing in animals occurs is very fine and delicate. How do the organisms protect their body by such surfaces?

 5

In which organisms the cell membrane acts as the respiratory surface?