These worksheets look at scientific taxonomy and the classification of organisms.

Carolus Linnaeus (a Swedish Scientist) recognized early that we needed to clearly be able to communicate to each the exact organism we were discussing. Not all dogs are the same, just like elephants. Linnaeus created a set of rules for naming system for organisms from bacteria to the blue whale. Linnaeus chose to use Latin words to define names in the scientific system. He found that each organism could be clearly defined in a naming system consisting of seven levels. The naming system starts as general as naming a Kingdom of each organism which defines if the organism is an animal, plant, protest, fungi, bacteria, or prokaryote. When students first start to work the various levels of animal and plant classification, they often do not see the point in it. Classification is very important because it ensures that scientists are studying the correct organism. There are thought to be just under nine million different species on Earth, it is proper scientific procedure to make certain you catalog which species you are studying.

This series of worksheets start out by explaining the difference between taxonomy and classification. As students begin to learn the complexities that are examined by a taxonomic structure, we start to have them explore this in detail. Students will begin naming all types of different creatures. We will finish off by spending some time with the single celled protist which are representatives of simple alga. We have several sheets that help students begin to understand how organisms are grouped and sorted.

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Print Classification Worksheets

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Taxonomy and Classification

Number the seven major taxonomic groups in order from the one containing the largest number of types of organisms to the one that containing only one. This worksheet has students look at all the characteristics exhibited by members of each Kingdom.

Classification of Animals and Microbes

Fifteen different organisms are shown below. For each, provide the common name and the name of the phylum to which it belongs.

Classification of Protists

See what you know your single celled pals. Match the description or definition in the left column with the correct word in the right column. Note that not all words in the right column are used.

Protists Classification

Circle the choice of the correct answer. We see what makes these things tick