PPT-Amphibians Classification and characters

Orders General Characters Aquatic or semi aquatic freshwater air and water breathing carnivorous cold blooded oviparous tetrapod vertebrates Head distinct trunk elongated Neck and tail may be present or absent. Sedative hypnotics depress or slow down the bodys functions These drugs are commonly referred to as tranquilizers sleeping pills or sedatives They were originally developed to treat medical conditions such as epileptic seizures as well as to treat a . 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? . 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. 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 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. Sinfield-Albets. Toler. Amphibians. The First Terrestrial Vertebrates. Amphibians are present on all continents except for Antarctica. . 3,000 modern day species.. This is a remnant of a once diverse group.. 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 . 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. Amphibians are eukaryotic, heterotrophic vertebrates. They have thin, smooth, moist skin. Some of them have fish-like scales and none of them have claws.. They are ectothermic (coldblooded).. They have external gills and lungs.. 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. Sinfield-Albets. Toler. Amphibians. The First Terrestrial Vertebrates. Amphibians are present on all continents except for Antarctica. . 3,000 modern day species.. This is a remnant of a once diverse group.. 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. 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 . Respiratory skin.. No exoskeleton.. Two pairs of . Pentadactyl. limbs.. More than one type of respiratory organs.. Three chambered heart.. Ureotelic. respiration.. Fish like developmental stage in development. .