PPT-Chapter 17 and 18 Notes, Reptiles and Amphibians

Characteristics of Class Amphibia Most amphibians are tetrapods meaning they have four limbs but some are limbless Amphibians have smooth moist skin Amphibians respire by lungs skin and gills. Ron Chakrabarty. Mark . Juhn. Daniel Montgomery. Andrew Tung. Amphibians. Family . Amphibia. Amphibians – General/Unique Characteristics. Moist, glandular skin with no scales. Feet lack claws and are often webbed. Amphibian diversity. Anura. (. frogs, ~4000 sp.); . Caudata. (salamanders, ~450 sp.); . Gymnophiona. (caecilians, ~175 sp.). Skin. permeable. respiration. mucous glands. poison glands. biphasic . lifestyle. For each theory . Explain the mechanisms. State the evidence. Q7. If you get stuck use the . ipad. and web age below.. http://. en.wikipedia.org. /wiki/. Alvarez_hypothesis. Over view of classification. Vocabulary. Scaly. : . covered in scales.. Extinct. : . (of a species, family, or other larger group) having no living members.. Flee. : . Run away from a place or situation of danger.. Elongated. : . Froggy Swamp Phylum: . Chordata. . Subphylum:Vertebrata. Order. Testudines. Rhynchocephailia. Squamata. Crocodilia. Common . example. Turtles and tortoises. Tuataras-found only in New Zealand. Lizards, snakes, and worm lizards. Scientist classify organisms based on many factors. Let’s learn!. Organisms can be grouped, or . classified. , according to similarities and differences in their physical characteristics. .. Classifying Animals. Chapter 34. “Never grow . a wishbone . where your backbone ought to be” . -Clementine . Paddleford. Origin of . Tetrapods. First . tetrapods. diverged 365 million years ago . (________). ________________________and shallow inland lakes with muddy bottoms likely selected for early . Fully adapted for life on land. All Amniotes – produce Amniotic Eggs. Dry, Scaly Skin. Ectothermic . More Efficient Circulatory and Respiratory Systems. Cloaca . Except for snakes, Reptiles have Paired limbs, most ending in 5 clawed toes . Fully adapted for life on land. All Amniotes – produce Amniotic Eggs. Dry, Scaly Skin. Ectothermic . More Efficient Circulatory and Respiratory Systems. Cloaca . Except for snakes, Reptiles have Paired limbs, most ending in 5 clawed toes . 9-25-17. 1. How does a vertebrate differ from an invertebrate?. A. A vertebrate eats only vegetables. B. All vertebrates are warm blooded. C. All vertebrates can fly. D. All vertebrates have a backbone. Fully adapted for life on land. All Amniotes – produce Amniotic Eggs. Dry, Scaly Skin. Ectothermic . More Efficient Circulatory and Respiratory Systems. Cloaca . Except for snakes, Reptiles have Paired limbs, most ending in 5 clawed toes . Amphibians and Reptiles Class Amphibia Amphibia =Double Life Frogs, toads, salamanders, and caecilians ~6000 species Skin with mucoid secretions, lack epidermal scales, feathers or hair Larvae are usually aquatic and Chapter 34. “Never grow . a wishbone . where your backbone ought to be” . -Clementine . Paddleford. Origin of . Tetrapods. First . tetrapods. diverged 365 million years ago . (________). ________________________and shallow inland lakes with muddy bottoms likely selected for early .