Presentation is loading. Please wait.

Presentation is loading. Please wait.

Unit V: Classification Ms. Buechler Int. Sci. 4/Biology.

Similar presentations


Presentation on theme: "Unit V: Classification Ms. Buechler Int. Sci. 4/Biology."— Presentation transcript:

1 Unit V: Classification Ms. Buechler Int. Sci. 4/Biology

2 EW

3 What is Classification?? There are over 2.5 million kinds of organisms, ranging from single-celled organisms to multi- cellular  we need a way grouping organisms into logical categories so that we can systematically name them. Classify= group ideas, information or objects based on similarities and differences

4 What is Classification? Biological classification systems have 2 features: 1. assigns a universally accepted name to each organism  allows scientists to exchange info/ideas regardless of language differences. 2. places organisms into groups with real meaning  all members of a group share similar characteristics.

5 What is Classification? Aristotle was the 1 st to classify organisms  he divided organisms into 2 categories  plants or animals Plants Animals Size Structure Air Land Sea This was a difficult system to standardize, with ridiculously long names…

6 What is Classification? Carolus Linnaeus was a Swedish botanist that developed a better system for naming organisms, which is still used today  Binomial Nomenclature (means “two names”) organisms are given a two-part Latin scientific name ◦ The 1 st name represents the organisms Genus, which are a group of organism with similar characteristics that are closely related ◦ The 2 nd name represents the organisms Species, which are a group of organisms that share similar characteristics and can breed with one another to produce viable offspring. Ex> Canis Lupis=gray wolf Ex>Acer rubrum= red maple

7 What is Classification? Taxonomy = the science of classifying and naming organisms  the groups that Linnaeus assigned organism were called taxa

8 What is Classification?? Gray Wolf Kingdom= Animalia Phylum= Mammalia Class=Chordata Order=Carnivora Family= Canidae Genus= Canis Species=Lupus Scientific Name= Canis Lupus Classification Video

9 Alien Classification Directions Assume one ancestral alien (top of tree) Separate your aliens into two large groups  what is the most important distinguishing characteristic? ◦ Body Markings v. No Markings? ◦ Arms v. No Arms? ◦ Eyes v. No Eyes? Begin making your tree - each time it branches, only make 2 new branches On each branch, write what characteristic you are using to determine the branching At each branch end, glue one alien Branches do not need to be the same length or have the same number of "steps"

10 Alien Classification Directions Assume one ancestral alien (top of tree) Separate your aliens into two large groups  what is the most important distinguishing characteristic? ◦ Body Markings v. No Markings? ◦ Arms v. No Arms? ◦ Eyes v. No Eyes? Begin making your tree - each time it branches, only make 2 new branches On each branch, write what characteristic you are using to determine the branching At each branch end, glue one alien Branches do not need to be the same length or have the same number of "steps"

11 Alien Classification Directions Answer the following on the back of your Alien Classification Tree: 1. How did you decide how to group the aliens? 2. How could the tree be used to help identify aliens? 3. How can you use your tree to determine which aliens are probably more closely related?

12 Classification Keys Lab Classification Keys.doc


Download ppt "Unit V: Classification Ms. Buechler Int. Sci. 4/Biology."

Similar presentations


Ads by Google