Amphibians

Science

Chapter 2.3

Fourth Grade

Lenkerville Elem.

Amphibian

A cold-blooded

vertebrate that

lives part of its life in water and part on

land.

Lungs

Organs through which

animals get oxygen from

air

Metamorphosis

The changes in form that occur form egg to adult.

Tadpole

Fishlike animals that hatch from

eggs

Traits of Amphibians

Body temperature changes with the

outside temperatures

Cold Blooded

1

Traits of Amphibians

2

Vertebrate

Has

A

Backbone

Traits of Amphibians

Lay eggs in Lay eggs in waterwater

3

Traits of Amphibians

Thin moist skin no scales4

Two Pairs of Legs

Traits of Amphibians

5

Traits of Amphibians

Developes

Lungs

6

Born with gills

Traits of Amphibians

Spend part of life in water

7

Life Cycle of Amphibians

The Life Cycle Of AmphibiansMetamorphosis

Female lays eggs and male fertilizes

them in water.

1

Tadpoles hatch•They have

gills

•Tail

•No legs

•Live in water

•Eat Plants

2

The Life Cycle Of AmphibiansMetamorphosis

Tadpoles•Lungs develop

•Grow back legs, then front legs

3The Life Cycle Of AmphibiansMetamorphosis

•Will lose tail

Full Grown Frog

Lives on land near the water and eats insects

4

The Life Cycle Of AmphibiansMetamorphosis

SalamandersThe Arizona Tiger Salamander is found throughout western Colorado and New Mexico, southeast to northwestern Arizona, and much of Utah

Eastern Tiger Salamander covers a wide range of areas extending from coast to coast across the United States and into Canada

Newt

The Red-Spotted Newt, Notophthalmus viridescens viridescens, is a medium sized newt reaching lengths of nearly 5 inches. Their life history is different from that of other amphibians. Both the larval and adult stages are aquatic. It is in the juvenile stage when they are found on land. This is known as the eft stage.

The eft stage may last anywhere from 1-7 years. The eft is usually only about 3 inches in length. The photo shown here is the eft stage. Sometimes the eft stage is skipped completely and they go directly from the larval to the adult stage.

Mud Puppy•Lives almost entire life under water

•Bushy gills outside its body

Fowler’s

Toad

Chubby

Frog

Sedge

Frog

Argentine Horned Frog

Couch Spade Foot Toad

Mud Puppy

California Slender