Gas exchange in fish

With an increase of surface area to volume ratio, what happens to rate of gas exchange?

• the rate of gas exchange increases

• gas exchange decreases

• fish breathe faster

• diffusion of oxygen decreases

When particles move from area of high concentration to area of low concentration, this is...

• osmosis

• diffusion

• concentration gradient

What is the function of gills in fish?

• absorbing carbon dioxide
• assisting in food digestion
• protecting a fish's lungs
• taking in dissolved oxygen

Tags

NGSS.MS-LS2-1

True of False?
The gill cover is called the Operculum.

• True
• False

What is the percentage dissolved oxygen in water?

• 1%

• 5%

• 10%

• 20%

Which gas exchange method is most efficient?

• Parallel flow

• Counter-current flow

Which structures increase the surface areas of the gills in fish? (select two)

• Gill filaments

• Lamellae

• Gill arch

• Operculum

the evolution of lamellae helped 

• increase surface area
• decrease surface area

What adaptations does the alveoli have for efficient gas exchange?

• thick walls

• thin walls

• small surface area

The diagram shows the structure of the human gas exchange system. Name organ P.

• alveolus

• trachea

• bronchus

• diaphragm