Name______________________________

Period_____

2.3 Guided Reading

Classification of Living Things

As you carefully read through the text, answer the following questions as completely as possible!

Introduction

1. When you put living things into certain groups, what do you look at?

2. What does it mean to “classify?”

3. How an organism looks and how it is related to other organisms determines how it is ___________________________.

Linnaean System of Classification

4. Carl _______________________ built on Aristotle’s work to create his own classification system.

5. Linnaeus is considered the inventor of modern _______________________, the science of naming and grouping organisms.

6. Linnaeus developed _____________________ nomenclature, a way to give a scientific name to every organism.

7. Each species receives a two-part name in which the first word is the ___________________ and the second word refers to one _________________ of that genus.

8. In a scientific name, the _________________ is always capitalized and the species is _____________, and that the whole scientific name is in ___________________.

9. Scientific names may sound strange because they are mostly written in a language called ______________________.

Modern Classification

10. List the levels of the modern classification system.

Difficulty Naming Species

11. What is a species?

Domains of Life

12. List and describe the three domains of life.

Archaea and Bacteria

13. Archaea and Bacteria seem very similar, but they also have significant ___________________.

14. List several similarities Archaea and Bacteria share.

15. List several differences between Archaea and Bacteria.

Eukarya

16. All of the cells in the domain Eukarya keep their DNA inside the ___________________.

17. List and describe the four kingdoms found within the Domain Eukarya.

Viruses

18. Technically, are viruses living things? Explain.

19. What are viruses? Explain.