Welcome to the Quiz!
This quiz contains 10 questions from a mix of 1 subtopics.
What is the primary function of the chitin reinforcement in the tracheae?
to reduce the gas diffusion distance
to prevent the tracheae from collapsing
to increase surface area for gas exchange
to allow gas exchange to occur
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Which of the following adaptations of tracheoles help to increase the rate of gas diffusion?
(Select all that apply)
highly branched structure
tracheal fluid
reinforced with chitin
thin walls
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What is the role of the tracheal fluid at the ends of the tracheoles?
(Select all that apply)
to reduce the respiration rate
to allow oxygen to dissolve and aid diffusion
to reduce water loss
to open the spiracles
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How do spiracles help minimise water loss in insects?
by opening and closing to control gas exchange
by remaining constantly open
by transporting air directly to cells
by being covered with a waterproof cuticle
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How are the concentration gradients between tissues and air in the tracheal system maintained?
(Select all that apply)
cells producing oxygen for respiration
cells using up carbon dioxide in respiration
continuous ventilation through spiracles
all of the above
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What is the primary role of spiracles in the insect gas exchange system?
to serve as external openings of the tracheal system
to prevent the tracheal system from collapsing
to increase the surface area for gas exchange
to transport air directly to cells
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What is the role of the waterproof cuticle covering the insect exoskeleton?
to help prevent water loss
to allow direct gas exchange
to maximise gas exchange efficiency
to deliver oxygen to cells
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Which of the following is NOT a characteristic of the tracheoles in the insect gas exchange system?
they are reinforced with chitin
they are highly branched
they have thin walls
they penetrate directly into tissues
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What is the term for the fine branches of tracheae that deliver gases to cells in the insect gas exchange system?
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What is the name of the external openings of the tracheal system on the insect exoskeleton along the abdomen and thorax?
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