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Biological Classification

8th Grade Science

Ashley Huneycutt

on 8 April 2013

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Transcript of Biological Classification

Kingdoms & Phylums Biological Classification When Linnaeus developed his system of classification, there were only two kingdoms, Plants and Animals. But the use of the microscope led to the discovery of new organisms and the identification of differences in cells. A two-kingdom system was no longer useful. Today, the classification system
includes six kingdoms. How are organisms placed into their kingdoms? Phylum Kingdoms are divided into Phylum.
There are at least 33 Phylum.

We are going to look at a few. When writing a scientific name, what part is capitalized and what is not? Plants Animals Protists Fungi Archaebacteria Eubacteria Cell type:
Simple Their ability to make food the number of cells in their body 2nd largest kingdom multicellular;
complex cells Plants are autotrophs: make their own food through photosynthesis Largest kingdom with over 1 million known species!! Complex structures Hetrotrophs:
eat other organisms the most ancient of organisms can be found in very hot or highly acidic environments Single celled break down organisms for food complex; single celled some can be helpful:
yogurt absorb? ingest? produce? Prokaryote?
Cells do not have membrane or DNA in encased area Eukaryote?
cell wall and DNA in nucleus Anthropoda External skeletons. Jointed bodies and limbs. Examples:
Insects. Spiders. Centipedes.
Lobsters. Crabs Mollusca soft, unsegmented bodies that are usually, but not always, enclosed in hard shells have one strong foot that helps them move (usually) Octopus. Squids. Cuttlefish. Snails. Slugs. Clams. Other Shellfish. Chordata Bilaterally Symmetrical:
The right and left sides of the body are mirror images Means having a cord.
We all have a spinal cord. Mammals. Birds. Reptiles. Amphibians. Fish. As humans, we are in the subphylum - Vertebrata. Video Quiz:
(Write T or F in your notes. Correct False statements.)
1. Jellyfish are members of the simplest phylum of animals.
2. Arthropods are the most diverse phylum of animals.
3. Most invertebrates have a notacord.
4. Sea anemones and starfish have radial body plans.
5. Most species of animals are vertebrates. This is important because we need to know where organisms belong. This classification system helps to show how organisms are similar and have evolved. Organisms are put into their groupings based on characteristics they share with others. The scientific name of an organism is written:
Genus species For example, the scientific name for humans is Homo sapiens. Find Someone Who Knows.....
1. What kingdom do mushrooms, mold and mildew belong to?
2. What domain do we belong to?
3. Which kingdom has both autotrophs and heterotrophs? (Think about the videos we watched!)
4. Which kingdom is the largest?
5. Which domain has the oldest organisms?
6. Which domain does strep belong to?
7. Which kingdom is made up of only autotrophs?
8. Which kingdom has organisms in the most extreme environments?
9. Which domain is made up of organisms that have a nucleus?
10. Which is the species name in the following: Ursus arctos? Reteach:
I can organize and classify organisms according to the biological classification system.
8.L.4.1 biological classification is a system which is used to organize and codify all life on Earth Goals of Biological Classification:
Examine the relationships between various organisms
Create a system to explore the origins of life on Earth
Relationship of modern organisms to historical examples Biological classification is also referred to as taxonomy. Life Archaea Bacteria Eukarya Fungi
Plants Eukaryote We are here! Ancient Single celled Kingdoms:
Archaebacteria Eubacteria Prokaryote Cells Autotrophs
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