Which one of the following organs is the main respiratory organ of whale?

The correct answer is the Lungs.

• The main respiratory organ of the whale is the lung.

Key Points

• Whales and dolphins are mammals and breathe air into their lungs, just like we humans do.
• They cannot breathe underwater like the fish can as they do not have gills for that.
• They breathe through nostrils, called a blowhole, located right on top of their heads.

Additional Information

• Blowholes are a physical feature of whales and dolphins characterized by a muscular hole on the top of their heads.
• Whenever the whales reach the water surface, the blowhole opens and it blows air out and in.
• While blowing out air, it can cause the water to spray which is called the spout.
• When underwater, the muscles around the blowhole ensure that it stays closed.