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

Fill in the Blanks

Give the name of the small tubes that branch extensively to make the insect gas exchange system.

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