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Vertebrates |
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In a modern system of classification, all animals can be divided into two groups - vertebrates and invertebrates. Vertebrates are animals that have a skeleton inside their bodies. Biologists call this an internal skeleton. |
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An internal skeleton includes a backbone which is made up of bones called vertebrae.
A vertebra Vertebra is one bone in a backbone; vertebrae is more than one bone from a backbone. |
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| All other animals are called invertebrates. Invertebrates do not have an internal skeleton. Examples of invertebrates include sponges, jellyfish, corals, worms, shellfish, octopuses, starfish, spiders and insects. | |
Lesson 13- Vertebrates |
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© State of New South Wales, Department of Education and Training 2004