Insect Tracheal System and Gas Exchange Quiz

What is the name of the specialized exchange surface found in insects for gas exchange?

• Alveoli

• Tracheal system

• Pulmonary veins

• Bronchioles

What is the function of the waxy exoskeleton in insects?

• To allow easy gas exchange

• To protect the internal organs

• To help in flight

• To prevent water loss

What are the openings to the airways in insects known as?

• Alveoli

• Spiracles

• Bronchioles

• Tracheoles

How does oxygen enter the cells of insects through the tracheal system?

• Directly through the exoskeleton

• By diffusion in tracheal fluid

• Through the spiracles

• By active transport

What happens when insects become active and start using their muscles?

• Fluid is drawn into the tracheoles

• Fluid is stored in the spiracles

• Fluid is pushed out of the tracheals

• Fluid is converted into oxygen

How do insects ventilate their tracheal system during flight?

• By expanding their abdomen

• By closing the spiracles

• By squeezing air sacs with flight muscles

• By increasing the waxy exoskeleton

What is the role of flight muscles in the ventilation of the tracheal system?

• To decrease oxygen levels

• To push and pull air sacs

• To close the spiracles

• To increase carbon dioxide levels

Which mechanism is used by larger insects like grasshoppers for breathing?

• Gill breathing

• Abdominal pumping

• Tracheal system

• Spiracular breathing

What happens when the abdomen of a grasshopper is expanded during breathing?

• All spiracles close

• Front spiracles close, back spiracles open

• Front spiracles open, back spiracles close

• All spiracles open

How does the tracheal system help insects in maintaining a constant supply of oxygen?

• By allowing direct diffusion into tissues

• By converting carbon dioxide into oxygen

• By storing oxygen in the exoskeleton

• By increasing the body size