PPT-Amphibians Characteristics of Amphibians

Amphibians are eukaryotic heterotrophic vertebrates They have thin smooth moist skin Some of them have fishlike scales and none of them have claws They are ectothermic coldblooded They have external gills and lungs. . Ms. Bridgeland . 5. th. Grade. Stage 1. : . Adult frogs. Stage 2. : . Frogs . lay eggs in water, which then are fertilized. . *How . are Amphibian Eggs different from other eggs? . 1 in Amphibians Agent S pawn failure in amphibians occurs when spawn fails to develop properly and consequently doesn’t hatch . Spawn failure may happen simply because the spawn is unfert Taxonomy of Amphibians. Kingdom . Animalia. Phylum . Chordata. Subphylum Vertebrata. Class . Amphibia. Order . Urodela. . (salamanders & newts). Order . Anura. . (frogs & toads). Amphibian diversity. Anura. (. frogs, ~4000 sp.); . Caudata. (salamanders, ~450 sp.); . Gymnophiona. (caecilians, ~175 sp.). Skin. permeable. respiration. mucous glands. poison glands. biphasic . lifestyle. Biology 342. Phylogeny . of . Basal . Tetrapoda. The group of bony fishes that gave rise to land-dwelling vertebrates and their descendants (. Tetrapoda. , or colloquially, “. tetrapods. ”) was the lobe-finned fishes, or . Frogs, Toads. , Newts,. Salamanders and. Caecilians. By: Annie Ladehoff. Key Characteristics. Can live on land and water. Exothermic (cold-blooded). Have smooth, moist skin. Have a backbone. Have 4 limbs – distinct front and back legs. Animals With Backbones. MAMMAL. FISH. REPTILE. BIRD. AMPHIBIAN. Animals with backbones are called vertebrates.. Vertebrates include many different kinds of animals. They can be found just about everywhere – in oceans, rivers, forests, mountains, and deserts.. 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 . Test 2: Amphibians and Reptiles:. Objective 1: Describe the characteristics of Modern Amphibians. Objective 2: Describe characteristics of the following orders: (. Apoda. , . Urodela. , . Anura. ). Give examples of each.. 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 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;. 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 . Spitzen-van der Sluijs A, Martel A, Asselberghs J, Bales EK, Beukema W, Bletz MC, et al. Expanding Distribution of Lethal Amphibian Fungus Batrachochytrium salamandrivorans in Europe. Emerg Infect Dis. 2016;22(7):1286-1288. https://doi.org/10.3201/eid2207.160109.