AmphibiansBy Mr. “Frogs are Cool” Chapman
History History indicates that  lobe-finned fish were  ancestors of  amphibians.
History So what would these lobe-finned fish do  when the ponds dried up? (think about  the lung fish)
History They would use their strong lobe-fins to  move to another pond or wet area. Now they can move from pond to pond,...
History
Classification  Kingdom: Animalia  Phylum: Chordata  Class: Amphibia
Amphibian There are about 4,000 species of  amphibians. Most living amphibians are in 3 orders.
Orders Gymnophiona: Caecilians   (naked snakes) 170 species only in tropics
Amphibians Gymnophiona: Caecilians   (naked snakes) 170 species only in tropics Caudata: Newts and salamanders   350 s...
Amphibians Gymnophiona: Caecilians   (naked snakes) 170 species only in tropics Caudata: Newts and salamanders   350 s...
CharacteristicsAmphibians are characterized by....... 1. Naked skin (no scales) 2. Three chambered heart 3. Usually a l...
Amphibians Amphibians also  have glands in their  skin that produces  toxic substances. Some toxics can be  deadly to pr...
 This is Zetek’s frog,  another highly  endangered species.  Some have more yellow  and orange than this  one. Why do som...
Amphibians Amphibians have never been able to  completely leave the water (or at least  moist environments). 1. They mus...
Tongues Tongues of amphibian vary considerably. Some amphibian have no tongues.   Ex. Caecilians
Tongues Tongues of amphibian vary considerably. Some amphibian have no tongues.   Ex. Caecilians Some amphibians have ...
Tongues Tongues of amphibian vary considerably. Some amphibian have no tongues.   Ex. Caecilians Some amphibians have ...
Amphibian Feeding Amphibians catch prey by using?     Their tongue     Mouth
Feeding Amphibians catch prey by using?     Their tongue     Mouth Once in there mouth, amphibians crush  their prey w...
Feeding How do amphibians push the food down  their throat? Amphibians use their eyes to push the  food down their throat.
What is Food   Amphibians will eat;   Insects   Spiders   Fish   Other frogs   Small mammals   Overall, amphibians ...
Where They Live Amphibians are mostly found? Wetlands, swamps, or in moist areas.
Where They Live Amphibians are mostly found? Wetlands, swamps, or in moist areas. Why do amphibians have to stay moist?...
Skin Amphibians skin is considered to be  semi-permeable. Semi-permeable means liquids and  gases can pass through their...
Skin But what happens when they are in water  that has toxic chemicals in it? The toxins get absorbed into their body  w...
Bio-Indicators Bio-Indicator – is an organism that  indicates whether or not an area is  healthy. Amphibians are widely ...
Reproduction Methods Oviparous – egg layers Viviparous – live birth Ovoviviparous – eggs hatch in side  mother and the ...
Amphibian history notes
Amphibian history notes
Amphibian history notes
Amphibian history notes
Amphibian history notes
Amphibian history notes
Amphibian history notes
Amphibian history notes
Amphibian history notes
Amphibian history notes
Amphibian history notes
Amphibian history notes
Amphibian history notes
Amphibian history notes
Amphibian history notes
Amphibian history notes
Amphibian history notes
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Amphibian history notes

  1. 1. AmphibiansBy Mr. “Frogs are Cool” Chapman
  2. 2. History History indicates that lobe-finned fish were ancestors of amphibians.
  3. 3. History So what would these lobe-finned fish do when the ponds dried up? (think about the lung fish)
  4. 4. History They would use their strong lobe-fins to move to another pond or wet area. Now they can move from pond to pond, and they also have a lung like organ that can take oxygen out of the air.
  5. 5. History
  6. 6. Classification  Kingdom: Animalia  Phylum: Chordata  Class: Amphibia
  7. 7. Amphibian There are about 4,000 species of amphibians. Most living amphibians are in 3 orders.
  8. 8. Orders Gymnophiona: Caecilians  (naked snakes) 170 species only in tropics
  9. 9. Amphibians Gymnophiona: Caecilians  (naked snakes) 170 species only in tropics Caudata: Newts and salamanders  350 species
  10. 10. Amphibians Gymnophiona: Caecilians  (naked snakes) 170 species only in tropics Caudata: Newts and salamanders  350 species Anura: Frogs and Toads  3,500 species
  11. 11. CharacteristicsAmphibians are characterized by....... 1. Naked skin (no scales) 2. Three chambered heart 3. Usually a larval stage that is distinct from the adult stage of development. 4. Cold-blooded 5. Moist skin 6. Semi-Permeable skin through which Semi-P they exchange most of their gases
  12. 12. Amphibians Amphibians also have glands in their skin that produces toxic substances. Some toxics can be deadly to predators and humans.
  13. 13.  This is Zetek’s frog, another highly endangered species. Some have more yellow and orange than this one. Why do some frogs have bright color pattern? Aposomatic Coloration (warning colors).
  14. 14. Amphibians Amphibians have never been able to completely leave the water (or at least moist environments). 1. They must return to the water to breed 2. They have to keep their skin moist.
  15. 15. Tongues Tongues of amphibian vary considerably. Some amphibian have no tongues.  Ex. Caecilians
  16. 16. Tongues Tongues of amphibian vary considerably. Some amphibian have no tongues.  Ex. Caecilians Some amphibians have a very long tongue with sticky tips.  Ex. Most toads
  17. 17. Tongues Tongues of amphibian vary considerably. Some amphibian have no tongues.  Ex. Caecilians Some amphibians have a very long tongue with sticky tips.  Ex. Most toads Amphibian tongues in between
  18. 18. Amphibian Feeding Amphibians catch prey by using?  Their tongue  Mouth
  19. 19. Feeding Amphibians catch prey by using?  Their tongue  Mouth Once in there mouth, amphibians crush their prey with their jaws and swallow it whole. Amphibians do not have teeth
  20. 20. Feeding How do amphibians push the food down their throat? Amphibians use their eyes to push the food down their throat.
  21. 21. What is Food Amphibians will eat; Insects Spiders Fish Other frogs Small mammals Overall, amphibians will eat anything they can fit into their mouth.
  22. 22. Where They Live Amphibians are mostly found? Wetlands, swamps, or in moist areas.
  23. 23. Where They Live Amphibians are mostly found? Wetlands, swamps, or in moist areas. Why do amphibians have to stay moist? If their skin dries up they will die.
  24. 24. Skin Amphibians skin is considered to be semi-permeable. Semi-permeable means liquids and gases can pass through their skin, but not solids. If amphibians are in a dry environment, there is nothing to stop water from moving out of their body.
  25. 25. Skin But what happens when they are in water that has toxic chemicals in it? The toxins get absorbed into their body with the water and they die. Amphibians are considered to be Bio-Indicators
  26. 26. Bio-Indicators Bio-Indicator – is an organism that indicates whether or not an area is healthy. Amphibians are widely used to figure out how healthy wetlands are. Example: If a pond has lots of frogs, you would know the water is clean and free of toxins.
  27. 27. Reproduction Methods Oviparous – egg layers Viviparous – live birth Ovoviviparous – eggs hatch in side mother and the young live in her until maturity.

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