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Why Do Biologists Classify Organisms

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Regina McCurdy

on 8 September 2016

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Transcript of Why Do Biologists Classify Organisms

Chapter 8.2-8.3 Classification
Chapter 8: Diversity of Life

Science is ALL about Digging into the Details...
from the BIGGEST...

to the tiniest...
What does it mean to CLASSIFY?
It means to group things based on similar traits or characteristics

does it have wings?
do they crawl?
does it have leaves?
is it single-celled?

In the Sciences...
Biologists classify organisms to make it easier to study, analyze and research them.
Chemists classify elements and chemicals to better understand how they react with each other
Zoologists classify animals to know which ones can be housed in the same cage or area.

What do other scientists or professions classify ?

Taxonomy is...
the study of how organisms are classified.

Carolus Linnaeus

The Swedish botanist who developed the process of classifying and naming living things
The Naming System
Binomial Nomenclature
is the system of naming organisms that includes a two-part scientific name (based in Latin and Greek)
First word is the
First letter of genus name is capitalized
Second word is the
The two-part name
is italicized

Example: the Lion
Why Classification ...?
... this gives us the ability to study all the aspects of living things in an organized way.
Science Notebook


Three Domains:

Six Kingdoms:
Protista (Protists)
Plantae (Plants)
Animalia (Animals)
Eubacteria (Bacteria)
Quick Quiz

You go hiking with your friends on a Saturday, and while you're out you discover a strange looking creature. Of the choices below, what would help you best identify its classification?

A. Its size, location and color
B. Its length, structure, and its habitat
C. Its structure, size, its food
D. Its color, size and food

Science Notebook

1. What does it mean to classify?
2. Draw a picture that represents
to you.
Science Notebook

3. What does
4. Draw a picture that describes diversity of organisms.
5. As the number of diverse organisms increases, what happens to the ability to classify these organisms?

whether they are unicellular or multi-cellular
their ability to make food
type of cell
Science Notebook

8. List the
characteristics that determine which domain or kingdom, an organism fits into:
7. Draw an image, symbol or picture that helps you understand that domains contain larger number of organisms that share general traits and species contains smaller number of organisms that share more specific and very similar traits. Label "domain" and "species" to help clarify these differences.
Science Notebook

6. List these

Levels of Classification
Full transcript