Finding Order in Diversity Section 18–1 This section explains how living things can be organized for study.

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18-1 Finding Order in Diversity
18-1 Finding Order in Diversity
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18-1 Finding Order in Diversity
Copyright Pearson Prentice Hall
Copyright Pearson Prentice Hall
Copyright Pearson Prentice Hall
18-1 Finding Order in Diversity
Classification.
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Presentation transcript:

Finding Order in Diversity Section 18–1 This section explains how living things can be organized for study.

Why Classify? Why do biologists use a classification system to study the diversity of life? They use it to name organisms and group them in a logical manner.

Why Classify? The science of classifying organisms and assigning them universally accepted names is known as_____. taxonomy

Why Classify? Is the following sentence true or false? In a good system of classification, organisms placed into a particular group are less similar to each other than they are to organisms in other groups. false

Assigning Scientific Names Assigning Scientific Names Why is it confusing to refer to organisms by common names? Common names vary among languages and even among regions within a single country. Furthermore, different species can share a single common name.

Assigning Scientific Names Circle the letter of each sentence that is true about early efforts at naming organisms. Names often described detailed physical characteristics of a species. Names could be very long. It was difficult to standardize the names.

Assigning Scientific Names The two-word naming system developed by Linnaeus is called_______. binomial nomenclature

Assigning Scientific Names Circle the letter of each sentence that is true about binomial nomenclature. Each species is assigned a two-part scientific name. The scientific name is always written in italics.

Assigning Scientific Names What is the genus of the grizzly bear, Ursus arctos? The genus is Ursus.

Linnaeus’s System of Classification A group or level of organization in taxonomy is called a taxonomic category, or_____. taxon

Linnaeus’s System of Classification The largest taxonomic category in Linnaeus’s system of classification is the _______, and the smallest is the ______. Kingdom, Species

Linnaeus’s System of Classification What two kingdoms did Linnaeus name? He named the Animalia and Plantae kingdoms.

Linnaeus’s System of Classification Fill in the name of each missing taxonomic category in the chart below.

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