1 / 9

The student is expected to:

Explore common ancestry evidence in the fossil record, biogeography, and homologies. Categorize organisms based on shared characteristics and differences for a deeper understanding of vertebrates. Compare characteristics of taxonomic groups. Dive into the unique features of vertebrates and their evolutionary journey. Uncover the significance of feathers, limbs, jaws, hair, and more in vertebrate evolution. Unravel the diversity and classification of vertebrates through informative lessons and engaging content.

gaill
Download Presentation

The student is expected to:

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. The student is expected to: 7A analyze and evaluate how evidence of common ancestry among groups is provided by the fossil record, biogeography, and homologies, including anatomical, molecular, and developmental; 8B categorize organisms using a hierarchical classification system based on similarities and differences shared among groups; 8C compare characteristics of taxonomic groups, including archaea, bacteria, protists, fungi, plants, and animals

  2. KEY CONCEPT All vertebrates share common characteristics.

  3. tail hollow nerve cord notochord pharyngeal slits The phylum Chordata contains all vertebrates and some invertebrates. • Chordates share four features at some stage of development. • notochord • hollow nerve cord • pharyngeal slits • tail

  4. tail hollow nerve cord notochord pharyngeal slits • Most chordates lose some or all of these characteristics in adulthood.

  5. All vertebrates share common features. • An endoskeleton allows vertebrates to grow to large sizes. • internal • made of bone or cartilage

  6. An endoskeleton can be divided into four parts. • braincase (cranium) braincase • vertebrae • bones • gill arches (in fish and some amphibians) vertebrae bones

  7. There are seven classes of vertebrates. • Agnatha are jawless fish. • Cartilaginous and bony fish are characterized by the presence of jaws. • Amphibians are characterized by the presence of four limbs. • Reptiles, birds, and mammals are characterized by the presence of an amnion. • Birds are characterized by the presence of feathers. • Mammals are characterized by the presence of hair.

  8. Agnatha Chondrichthyes Osteichthyes Amphibia Mammalia Aves bony fish birds lamprey amphibians mammals cartilaginous fish FEATHERS Feathers insulate birds from the cold and allow for flight. FOUR LIMBS Four limbs let animals move from the water to life on land. JAWS Jaws helped vertebrates to become successful predators. HAIR Hair helps mammals to maintain constant body temperatures by roviding insulation from the cold. VERTEBRAE Vertebrates have a segmented backbone.

  9. Fossil evidence sheds light on the origins of vertebrates. • Tunicates may be the closest relatives to vertebrates. • The first recognizable vertebrates were jawless fish. • Two groups of jawless fish still exist today. • lampreys • hagfish

More Related