Snakes Use Their Spongy Mouths to Drink

The video explores the unique ways snakes drink water, focusing on two main methods: suction and sponge-like absorption. Initially, researchers believed snakes used suction by contracting mouth muscles, but later discovered that some snakes have sponge-like mouths that absorb water through capillary action. This adaptation likely evolved for eating but is also useful for drinking. The video highlights ongoing research, as scientists continue to study the variations in drinking methods among different snake species.

What was the initial theory about how snakes drink water?

• They use their tongues to lap up water.

• They rely on suction by contracting mouth muscles.

• They absorb water through their skin.

• They tilt their heads back to swallow water.

How do snakes with sponge-like mouths draw in water?

• By using their tongues to scoop water.

• By expanding folds in their mouth tissues.

• By tilting their heads back.

• By opening their mouths wide.

What is the term for a trait that evolved for one purpose but now serves another?

• Adaptation

• Mutation

• Evolution

• Exaptation

Why do scientists believe the mouth folds in snakes originally evolved?

• For better water absorption.

• To help them swallow prey whole.

• To improve their sense of smell.

• To aid in temperature regulation.

What is still uncertain about snake drinking methods?

• Whether all snakes use the same method.

• If snakes can drink saltwater.

• How snakes use their tongues to drink.

• If snakes can drink without opening their mouths.