Question

Может ли лягушка совершать дыхательные движения с открытым ртом на суше?под водой? Почему?

Answer 1

Нет неможет потому что она земноводное и дышет воздухом поэтому в воде это невозможна 

Answer 2

Моё мнение нет,потому что они на суше дышат легочными мешками,а в воде жабрами☺

Answer 3

Can a frog perform breathing movements with an open mouth on land and underwater?

Yes, a frog can perform breathing movements with an open mouth both on land and underwater.

On Land: When a frog is on land, it breathes using its lungs. It takes in air through its nostrils and mouth, and the air passes through the lungs for gas exchange. The frog's mouth remains closed during this process. The lungs of a frog are simple and sac-like, allowing for efficient gas exchange with the surrounding air.

Underwater: When a frog is underwater, it can also perform breathing movements with an open mouth. However, in this case, the frog does not use its lungs to extract oxygen from the water. Instead, it relies on a specialized breathing mechanism called cutaneous respiration. Cutaneous respiration involves the exchange of gases (oxygen and carbon dioxide) through the frog's moist skin. The frog's skin is highly permeable to gases, allowing oxygen to diffuse into its bloodstream and carbon dioxide to diffuse out. The open mouth helps facilitate the exchange of gases by allowing water to flow over the skin and increase the surface area available for gas exchange.

It's important to note that while frogs can perform breathing movements with an open mouth underwater, they still need to come to the surface periodically to breathe air. This is because cutaneous respiration alone is not sufficient to meet their oxygen requirements, especially during periods of increased activity.

In summary, frogs can perform breathing movements with an open mouth both on land and underwater. On land, they use their lungs for gas exchange, while underwater, they rely on cutaneous respiration through their skin.