More cards in this set

What are gill filaments?

What two structures increase surface area of the gill?

How does the lamellae speed up diffusion between the water and blood?

How does a good blood supply increase the rate of diffusion?

How does the counter current system maintain a concentration gradient?

SIMPLY what does the counter current system in a fish do?

What is the main gas exchange surface in plants?

What do guard cells control?

What pores do gases move in and out of in a plant?

Why would the stomata close?