¿Cómo respiran los peces?

Fish need oxygen to survive, just like all animals. Instead of breathing air, fish absorb oxygen from water using their gills, which are located under their mouths. When fish open their mouths, water flows through the gills, which are specialized organs that extract dissolved oxygen. Although water contains less oxygen than air, gills have a large surface area to efficiently absorb oxygen. The oxygen then enters the fish's bloodstream, allowing them to exhale carbon dioxide back into the water. Gills function similarly to lungs, enabling fish to live and breathe underwater.

How do fish obtain the oxygen they need to survive?

• By holding their breath

• By not needing oxygen

• By inhaling air

• By absorbing oxygen from water

Where are the gills located on a fish?

• On the back

• On the tail

• Under the mouth

• On the fins

What is the primary function of gills in fish?

• To protect against predators

• To absorb oxygen from water

• To filter food from water

• To help fish swim faster

How do gills compare to lungs in terms of function?

• Gills are used for swimming, lungs for breathing

• Gills and lungs have no similar functions

• Gills are for eating, lungs are for breathing

• Both gills and lungs are used for absorbing oxygen

What happens to carbon dioxide in fish?

• It is exhaled through the mouth

• It is stored in the body

• It is converted into oxygen

• It exits through the gills into the water