Fish Respiratory System

These are organs of fish which supply oxygen. These are.....

• operculum

• gills

• lamellae

Most fish have ........gills on each side of their head.

• five

• three

• four

Bony fish can have between ............ gills on each side.

• 2 and 3

• 4 and 5

• 5 and 7

Choose the correct statement below ...

• small fish breathe faster than big fish

• big fish breathe faster than small fish

• small fish breathe slower than big fish

Gill filaments providing a large surface area for exchange....

• blood

• water

• gases

Fish take in oxygen-rich water through ....

• mouth

• nose

• blood vessel

In the process of respiration of fish, when mouth of fish open and the gill cover will be ....

• open

• close

• open and close

When water moves over the gills filaments , the blood within the capillary network takes up the dissolved ....

• carbon dioxide

• air

• oxygen

Blood moves in and out of the gills through ....

• operculum

• blood vessels

• gills arch

The filaments in fish gills are organized in rows in the...

• operculum

• blood vessel

• gills arch