Insect and fish gas exchange

Insect and fish gas exchange

Multiple Choice

What are the holes on an insect's body called?

• Pores

• Spiracles

• Spindles

• Stomata

Multiple Choice

What helps to draw air into the insect tracheae

• breathing

• abdominal pumping

• respiration

• gas exchange

Multiple Select

Which substance(s) can exit the spiracles?

• oxygen

• glucose

• carbon dioxide

• water (vapour)

Multiple Select

What feature of the FISH gas exchange system helps to increase surface area (click ALL the correct answers)

• Many Filaments

• Many Spiracles

• Many Lamellae

• Many Gills

Multiple Select

The countercurrent system is where... (tick ALL the correct statements)

• Blood in the capillaries flows in the opposite direction to water outside the lamellae

• Blood in the capillaries flows in the same direction to water outside the lamellae

• Blood in the capillaries is always next to water that has a higher oxygen concentration

• Diffusion of oxygen from the water into the blood occurs along the whole length of the gill

Multiple Select

A small diffusion pathway is achieved in the INSECT gas exchange system by:

(Tick all the correct answers)

• Lamellae walls are very thin

• Walls of traceoles are very thin

• Cells are very close to the end of each tracheole

Multiple Select

A small diffusion pathway is achieved in the FISH gas exchange system by:

(Tick all the correct answers)

• Capillary walls are just a single layer of flattened cells

• Lamellae walls are very thin

• Tracheole walls are very thin

Multiple Choice

Insects limit water loss by:

• Closing their spiracles, periodically

• Opening their spiracles, periodically

• Closing their tracheoles, periodically

• Opening their tracheoles, periodically