Amphibians AHSGE Objective 11 -Amphibian Facts Class Amphibia (double life)
Live part of their lives on land and part inwater Ectothermic vertebrates 3-Chambered heart Ex: Frogs, toads, salamanders, newts,caecilians -Amphibian Skin Smooth and moist Not water proof
Permeable to liquids and gas Can absorb oxygen -Amphibian Reproduction
All reproduce sexually Most frogs and toads use external fertilization,many salamanders and caecilians use internalfertilization Must lay eggs in water Eggs are soft and covered in a jelly -Amphibian metamorphosis
Most hatch in water as larvae (tadpoles) Breath through gills at first Develop legs and lungs and move to land Must return to water to reproduce -Amphibian Adaptations
Poison arrow/ dart frogs produce toxins to keepfrom being eaten Toads have poison glands on their heads Some toads are able to survive in the desert Poison Arrow Frog -Amphibian Adaptations
Poison arrow/ dart frogs produce toxins to keepfrom being eaten Toads have poison glands on their heads Some toads are able to survive in the desert Poison glands located right behind the ear. Green Tree Frog Hellbender (mudpuppy) Fire salamder Spotted Salamander Tiger Salamander Tiger Salamander Japanese Giant Salamander
animals-japanese-giant-salamander.htm