1 / 7

Chapter 19 Amphibians: The First Terrestrial Vertebrates

Chapter 19 Amphibians: The First Terrestrial Vertebrates. Evoluntionary perspective. Amphibians are tetrapods. Tetrapod in the sense refer to living amphibians often called lissamphibia. Order caudata. Members of this group is called caudata are the salamnders./

liana
Download Presentation

Chapter 19 Amphibians: The First Terrestrial Vertebrates

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 19Amphibians: The First Terrestrial Vertebrates

  2. Evoluntionary perspective • Amphibians are tetrapods. • Tetrapod in the sense refer to living amphibians often called lissamphibia

  3. Order caudata • Members of this group is called caudata are the salamnders./ • They posses a tail throughout life, and both pairs of legs, when present, are relatively unspecialized.

  4. Order anura • The order anura or salientia includes about 3,500 species of frogs and toads. • Anuaran live in most moist environment, except in high latitudes and some oceanic island.

  5. Nutrition and the digestive system • Mosts adult amphibians are carnivores that feed on a wide variety of invertebrates.

  6. Gas exchange • Gas exchanges across the skin is called cutaneous respiration. • This buccopharyn geal respiration account for 1 of 7% of total gas exchange. • Pulmonary ventilation occurs by a bucceal pump mechanism.

  7. vocalization • Sound production is primarily areporoductive function of male anurans. • The sound production appartus iof frog consists of the larynx and its vocal cords.

More Related