The gaseous exchange surface in a fish

Question 1

gaseous exchange in a fish

Answer 1

Gaseous exchange occurs in the gills of a fish. A bony fish has four gills at each side of its head. Each gill has two rows of long, thin, finger-like projections called gill lamellae.

Question 2

how do fish use oxygen

Answer 2

oxygen that is dissolved in water

Question 3

gas exchange surface in a fish

Answer 3

The walls of the gill lamellae form the gaseous exchange surface. Each lamella:
* Has a wall that is one cell thick.
* Is moist since it has water passing over it as the fish breathes.
* Has a dense network of capillaries down the centre.

Question 4

gill pouches

Answer 4

spaces in between the gills. they open to the outisde

Question 5

operculum

Answer 5

a piece of skin that covers the gills