Air Passage into the Trachea of Most Insects Is Controlled

question 5

Multiple Choice

Air passage into the trachea of most insects is controlled by the closing and opening of valves, which operate special openings called

• A)spiracles.
• B)ocelli.
• C)ommatidia.
• D)book lungs.

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Definitions:

Incisors

Chisel-shaped teeth of a mammal; adapted for biting and cutting food. Compare with canines, premolars, and molars.

Digestive Tract

The series of hollow organs joined in a long, twisting tube from the mouth to the anus, where digestion and absorption of food occurs.

Rugae

Folds, such as those in the lining of the stomach.

Gastric Juices

are a mixture of mucus, hydrochloric acid, and digestive enzymes produced by the stomach lining to digest food.