Amphibians A.Characteristics of Amphians 1. Metamorphosis 2. Obtaining Oxygen 3. Circulatory System...
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Transcript of Amphibians A.Characteristics of Amphians 1. Metamorphosis 2. Obtaining Oxygen 3. Circulatory System...
![Page 1: Amphibians A.Characteristics of Amphians 1. Metamorphosis 2. Obtaining Oxygen 3. Circulatory System 4. Movement 5. Reproduction B. Types of Amphibians.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649e305503460f94b20451/html5/thumbnails/1.jpg)
Amphibians
A. Characteristics of Amphians
1. Metamorphosis 2. Obtaining Oxygen 3. Circulatory System 4. Movement 5. ReproductionB. Types of Amphibians 1. Anura 2. Caudata 3. Gymnophiona
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Amphibians
A. 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
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Amphibians
A. 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.
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Amphibians
A. 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.
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Amphibians
A. 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
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Amphibians
A. 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
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Amphibians
A. 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
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Amphibians
A. 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
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Amphibians
A. 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
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Amphibians
A. 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
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Amphibians
A. 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
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Amphibians
A. 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
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Amphibians
A. 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
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Amphibians
A. 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
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