PDF-1GUIDELINES FOR USE OF LIVE AMPHIBIANS AND REPTILES IN FIELD ANDTable

23 Air Changes and Humidity 26e Food and Water 27f Substrates 27g Other Considerations 27VI Disposition of Ill or Dear Animals During Course of Study 281 Diagnosis 282 Tre. Introductory Video. Objective: Students will identify vertebrates and classify some as birds and fish.. Lesson 2.1 God's Design of Vertebrates. Unique. One of a kind. Verterbrate: An animal with a backbone. What is a Reptile?. Reptiles have a well-developed skull, a backbone and tail, four limbs.. Snakes will be limbless and turtles have hard shells that are fused with their vertebrae.. All reptiles have dry, scaly skin, lungs, and eggs on land.. Amphibian diversity. Anura. (. frogs, ~4000 sp.); . Caudata. (salamanders, ~450 sp.); . Gymnophiona. (caecilians, ~175 sp.). Skin. permeable. respiration. mucous glands. poison glands. biphasic . lifestyle. Reptiles. First to move to land. Then some came back to water . 4 orders:. Snakes & Lizards. Crocodiles, etc. Tuataras. Turtles and tortoises . Reptiles. Adapated to life on land:. Lungs. Skin--hard, prevents dessication, some have slimy coating. 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 . Shore Birds:. Also known as Waders. Feed on abundance of marine life in the intertidal zone. Size varies from as small as a sparrow to larger than a chicken. Group includes oyster catchers, tattlers, curlews, godwits, turnstones, sandpipers, jacanas, surfbird, phalaropes and inland species such as woodcocks. 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 . Adaptations to Meet Challenges of Life on Land. Challenges of Life on Land vs. Water. Adaptation to Meet Challenge . Air much less buoyant than water so must move against gravity. Limbs develop;. skeletal and muscle systems become stronger. 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. Amphibians “Double Life” Adaptations to Meet Challenges of Life on Land Challenges of Life on Land vs. Water Adaptation to Meet Challenge Air much less buoyant than water so must move against gravity 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 Ecological Fitness. How well an organism has adaptations well suited to its environment. An ecologically fit organism has a survival advantage . Adaptation. An inherited characteristic that increases an organism’s ability to survive an environmental change.