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Name: ____________________________ Classification Notes ANIMALS • Animals are very ______________ in appearance. • What are 5 important characteristics that all animals share? 1. ________________________________________________________________________ 2. ________________________________________________________________________ 3. ________________________________________________________________________ 4. ________________________________________________________________________ 5. ________________________________________________________________________ • There are 2 major groups of animals: 1. ______________: animals that do not have a backbone 2. ______________: animals that have a backbone • Note: The groups invertebrates and vertebrates are NOT ______________ classification groups. We formally classify invertebrates and vertebrates into ______________. INVERTEBRATES • More than ______________ of animals are invertebrates. In fact, there are ______________ phyla of invertebrates and only ______________ phylum of vertebrates. • Invertebrates are ______________ organisms compared to vertebrates. • What are 8 major phyla of invertebrates? 1. ____________________________ 2. ____________________________ 3. ____________________________ 4. ____________________________ 5. ____________________________ 6. ____________________________ 7. ____________________________ 8. ____________________________ • There are two invertebrates not found in these phyla. These invertebrates – known as the ______________ and ______________ – belong to phylum ______________. VERTEBRATES • Vertebrates are the ______________ common group of animals on Earth • All vertebrates belong to one phylum: ______________. • Animals belonging to phylum Chordata are known as ______________. Thus, all vertebrates are ______________. • All chordates share characteristics that are present during at least part of the animal’s ______________. The most important characteristic is the presence of a ______________ ______________ ______________ cord. Classification 1 © Stephanie Elkowitz