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Ch. 18 Classification And Study Study Guide - Unit 5 - Classification, Mrs. Gretchen Whelan, Lafayette High School Page 2

Scientific Naming

Use you knowledge of Linnaeus’s binomial nomenclature to answer the following questions.

Genus

Species

12. What two taxa make up a scientific name?

and

capitalized

13. When writing a scientific name, the first word is always

and the second word is always

lowercase

italics

underlined

14. A scientific name is written in

7 Taxonomic Levels

List the 7 taxonomic levels in order from largest to smallest.

Kingdom

Phylum

Class

Order

Family

Genus

Species

15. Write the phrase that helps you remember the 7 taxonomic levels.

King Philip Came Over For Great Soup

Understanding Cladograms

Follow the directions to interpret the cladogram.

• Color the organisms that have molted external skeleton BLUE.

• Color the organism without a molted external skeleton RED.

16. Which organism(s) show segmentation?

Crab and Barnacle

17. What do all three organisms shown have in common?

Tiny free-swimming larva

18. Which two organisms are most closely related?

Crab and Barnacle – have more in common

Ch. 18 Classification And Study Study Guide - Unit 5 - Classification, Mrs. Gretchen Whelan, Lafayette High School Page 2