Simplify. -

question 213

Multiple Choice

Simplify.
-

• A) 11 12

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Definitions:

Ventilation

The process of actively moving air or water over a respiratory surface.

Tracheal Tubes

Air-conducting tubes in the respiratory systems of some invertebrates, notably insects, facilitating gas exchange.

Opercula

Flap-like structures in certain animals, such as fish, that cover and protect the gills, or the lid covering the opening of a snail's shell.

Alveoli

Tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide takes place.