'Only vertebrates' presentation slideshows

Chapter 31: Fishes and Amphibians

Chapter 31: Fishes and Amphibians. Section 1: Fishes. What is a Fish?. Fishes and other vertebrates have at some time during their development a notochord, a hollow dorsal nerve cord, and pharyngeal slits

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http://www.youtube.com/watch?v= ti0HDtRY8u4

302 views • 13 slides

Lecture 6 ANIMAL EVOLUTION: THE VERTEBRATES

Lecture 6 ANIMAL EVOLUTION: THE VERTEBRATES. Amniotes . The first invertebrates to adapt to dry habitats. The only vertebrates that produce eggs with four membranes: these membranes conserve water; protect the developing embryo before hatching or being born. Have dry, tough or scaly skin.

138 views • 3 slides