Vertebrate diversity. Fish, amphibians and reptiles

In this topic

• Who are the vertebrates?
• Fish — animals of the water
• Amphibians — in water and on land
• Reptiles — true land animals

Key terms

• Chordates
• Notochord
• Backbone
• Gills
• Fin
• Lateral line
• Cold-blooded
• Metamorphosis
• Tadpole
• External fertilisation
• Horny scale
• Egg shell

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