AMPHIBIANS

ADAPTATIONS FOR LIFE ON LAND

• Amphibians possess backbones and look between a cross of reptile and fish.
• Their larvae mature in the water and breathe through gills like fish.
• The adult breathe through developed lungs and skin.
• Their scaleless skin must be kept moist in order for them not to die.
• Amphibians are primarily sight feeders, responding to the movement of their prey.

ADAPTATIONS CONT.

• Amphibians have a thin layer that is kept moist.
• They're so cold-blooded so their temperature is the same as their environment.
• Gas exchange occurs across the skin in amphibians as well in the lungs.
• Chemoreception is an important for all amphibians.
• Smell is used for mate recognition, detecting toxins, and locating food.

ADAPTATIONS CONT.

• An amphibian hearing transmits both underground and airborne vibrations.
• Amphibians have many sensory receptors on their skin.
• They also have a lateral line system similar to fish that help aquatic amphibians .

HABITAT

• Amphibians have adapted to survive in many different places.
• They can be found in forests, woodlots, meadows, springs, streams, rivers,
• lakes, ponds, bogs, marshes, swamps, vernal ponds, and even farmland.
• They live in places where they can always moist their skin fairly easy so they
• can survive.

DIGESTIVE ORGANS

• Mouth- they digest their food this way.
• Pharynx- food moves through from the mouth.
• Esophagus- it pushes the food farther into the stomach.
• Stomach- deglutition or swallowing
• Small intestine- most of the digestion occurs here.

DIGESTIVE ORGANS CONT.

• Large intestine- absorbs unabsorbed nutrients.
• Cloaca- liquid waste is passed through here
• Accessory Organs

METAMORPHOSIS