AmphibiansA. Characteristics of
Amphians 1. Metamorphosis 2. Obtaining Oxygen 3. Circulatory System 4. Movement 5. ReproductionB. Types of Amphibians 1. Anura 2. Caudata 3. Gymnophiona
AmphibiansA. Characteristics of
Amphibians 1. Metamorphosis 2. Obtaining Oxygen 3. Circulatory System 4. Movement 5. ReproductionB. Types of Amphibians 1. Anura 2. Caudata 3. Gymnophiona
• Amphibians are vertebrate
• They are ectothermic• They can live in both
aquatic and terrestrial (land) environments
• The name amphibian comes from the Ancient Greek word 'amphibios' meaning living a dual life
• Moist Skin
AmphibiansA. Characteristics of
Amphians 1. Metamorphosis 2. Obtaining Oxygen 3. Circulatory System 4. Movement 5. ReproductionB. Types of Amphibians 1. Anura 2. Caudata 3. Gymnophiona
• In frogs:• eggs hatch and give rise to
tadpoles, that have external gills and are mainly vegetarian
• As the tadpole grows, internal gills and hind limbs form.
• Mouth and tongue enlarge • Lungs form and gills disappear• 2chamber heart changes to 3
chamber heart• Front limbs form• Resorption of the tail.
AmphibiansA. Characteristics of
Amphians 1. Metamorphosis 2. Obtaining Oxygen 3. Circulatory System 4. Movement 5. ReproductionB. Types of Amphibians 1. Anura 2. Caudata 3. Gymnophiona
• In salamanders:• Eggs hatch around thirty days• Gills to breathe underwater • Uses tail for movement• Eat tiny creatures that live in the
water • At three weeks legs start to grow.
The back legs develop first, followed shortly by front .
• Uses both legs and tail for movement.
• At 2 months attain adult shape: develop lungs. lose gills, lose tail fin and attain their adult coloring
• At two years reach their full adult length, at which point they will return to the water to mate.
AmphibiansA. Characteristics of
Amphians 1. Metamorphosis 2. Obtaining Oxygen 3. Circulatory System 4. Movement 5. ReproductionB. Types of Amphibians 1. Anura 2. Caudata 3. Gymnophiona
• Lungs• Skin• Even when the lungs
are used, Amphibians can obtain up to 50% of the needed oxygen and let out up to 70% of the carbon dioxide through the skin
AmphibiansA. Characteristics of
Amphians 1. Metamorphosis 2. Obtaining Oxygen 3. Circulatory System 4. Movement 5. ReproductionB. Types of Amphibians 1. Anura 2. Caudata 3. Gymnophiona
• Closed circulatory system
• 2 chamber heart as tadpole
• 3 chamber heart as adult
AmphibiansA. Characteristics of
Amphians 1. Metamorphosis 2. Obtaining Oxygen 3. Circulatory System 4. Movement 5. ReproductionB. Types of Amphibians 1. Anura 2. Caudata 3. Gymnophiona
• Tail - swim• Legs – jump, crawl, run• Webbed feet - swim• Sticky pads on toes -
climb• burrowing
AmphibiansA. Characteristics of
Amphians 1. Metamorphosis 2. Obtaining Oxygen 3. Circulatory System 4. Movement 5. ReproductionB. Types of Amphibians 1. Anura 2. Caudata 3. Gymnophiona
• Reproduce sexually• Both external and
internal fertilization
AmphibiansA. Characteristics of
Amphians 1. Metamorphosis 2. Obtaining Oxygen 3. Circulatory System 4. Movement 5. ReproductionB. Types of Amphibians 1. Anura 2. Caudata 3. Gymnophiona
• Ah-NOO-ra
AmphibiansA. Characteristics of
Amphians 1. Metamorphosis 2. Obtaining Oxygen 3. Circulatory System 4. Movement 5. ReproductionB. Types of Amphibians 1. Anura 2. Caudata 3. Gymnophiona
• Ah-NOO-rah• Without tail• Frogs and toads• Make noise to
communicate• External fertilization• Amplexus:• Female lays the eggs which
are in a jellylike layer. • Male immediately
fertilizes them• Limbs used for crawling,
running, hopping
AmphibiansA. Characteristics of
Amphians 1. Metamorphosis 2. Obtaining Oxygen 3. Circulatory System 4. Movement 5. ReproductionB. Types of Amphibians 1. Anura 2. Caudata 3. Gymnophiona
• Cau-DAY-ta
AmphibiansA. Characteristics of
Amphians 1. Metamorphosis 2. Obtaining Oxygen 3. Circulatory System 4. Movement 5. ReproductionB. Types of Amphibians 1. Anura 2. Caudata 3. Gymnophiona
• Cau-DAY-ta• With tail• Salamanders, Newts,
Waterdogs, Mudpuppies
• Internal fertilization • Limbs used for crawling
and running• Scent and visual forms
of communication
AmphibiansA. Characteristics of
Amphians 1. Metamorphosis 2. Obtaining Oxygen 3. Circulatory System 4. Movement 5. ReproductionB. Types of Amphibians 1. Anura 2. Caudata 3. Gymnophiona
• Gym-no-phi-o-na
AmphibiansA. Characteristics of
Amphians 1. Metamorphosis 2. Obtaining Oxygen 3. Circulatory System 4. Movement 5. ReproductionB. Types of Amphibians 1. Anura 2. Caudata 3. Gymnophiona
• Gym-no-phi-o-na• Without limbs• Caecilians• Burrows in soft dirt• Lay eggs/live births• Tentacle• Poor eye sight• Terrestrial/aqutic