PPT-RePtiles Common Characteristics

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 . 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. Jessica Brown. Miila. Hall. Cold-blooded. Tetrapods. , four appendages. Considered as the first animals on land with the ability to live and multiply on land (amniotic egg). Amniotic egg- . a shelled, water-like sac that enables reptiles to complete their life cycles on dry land.. 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. 2. Amniotic eggs have . membranes that protect the embryo from . desiccation, cushion the embryo, help with gas exchange, and store waste material.. 3. The amniotic eggs of reptiles and birds also have leathery or hard shells that protect the developing embryo, and a yolk that supplies food to them.. Chordata. An Introduction to Vertebrate Animals . Introduction. Chordates (vertebrates) are the group of animals . most familiar to us. Ex: . mammals, birds, amphibians, reptiles, fish. Name comes from:. Click Here!. Can any of you . name. these three reptiles?. Objective: Today we are going to learn how to describe three basic characteristics of reptiles. . Click to Check out REPTILES!. Menu. Crocodiles. Justify the statement that “the amniotic egg provided solutions that made development apart from external watery environments possible.”. Compare amniote taxonomy before and after the application of cladistic methods.. History of Reptiles. Reptiles arose from amphibians. Earliest fossils 359 . m.y.a. Small, four – legged vertebrates w/small teeth. Pangaea. Drier climate. Mass extinction during Paleozoic era. Diversified to fill niches left by extinct species. 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 . Chapter 26 Reptiles and Birds Reptiles Skin is smooth and dry, covered in scales Helps prevent the evaporation of water from its body. First vertebrates with adaptations that enabled them to survive on land only. Summary: . Educators will lead observation and discussion about the different types (orders) of reptiles and what they have in . common . and also what makes them . different from each other. . Discussion can lead to . These were the first class of organisms to adapt to life on land. They are believed to have evolved from the amphibians millions of years ago. There are about 10000 different species of reptiles on earth. They are cold-blooded animals belonging to the phylum Chordata of Animal kingdom.