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Classification. All Living Things Share Common Characteristics 1. All living things are made of Cells 2. They all Reproduce 3. All are Based On Universal.

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Presentation on theme: "Classification. All Living Things Share Common Characteristics 1. All living things are made of Cells 2. They all Reproduce 3. All are Based On Universal."— Presentation transcript:

1 Classification

2 All Living Things Share Common Characteristics 1. All living things are made of Cells 2. They all Reproduce 3. All are Based On Universal Genetic Code (DNA) 4. Grow & Develop 5. Obtain & Use Energy

3 All Living Things Share Common Characteristics 6. Respond to their environment 7. Maintain a stable internal conditions – HOMEOSTASIS 8. AS A GROUP, living things Evolve or Change over time

4 Organisms are grouped by their cell structure Prokaryotes – DO NOT have a nucleus or membrane- bound organelles Eukaryotes – These cells DO have a nucleus and membrane- bound organelles

5 Organisms are Grouped by their Number of Cells Unicellular Organisms – Living Organism Made Up Of One Cell (single- celled) Multicellular Organisms – Living Organism Made Up Of Many, Specialized Cells

6 Food Requirements Autotrophs are organisms that can make their own food

7 Food Requirements Heterotrophs can NOT make their own food They must consume other organisms to get energy

8 Linnaean System of Classification Linnaeus introduced the system of classification used today. Linnaeus introduced the system of classification used today.

9 What is Classification? Taxonomy is the science of naming and classifying organisms. Kingdom Phylum Class Order Family Genus Species

10 Why Classify & Use Scientific Names Accurately & uniformly names organisms Accurately & uniformly names organisms Prevents confusion found in common names: Prevents confusion found in common names: – starfish & jellyfish that aren't really fish Uses same language (Latin) for all names Uses same language (Latin) for all names Sea”horse”??

11 Standardized Naming Binomial nomenclature is the system used for naming organisms. Binomial nomenclature is the system used for naming organisms. Scientific Name consists of the Genus and the species Scientific Name consists of the Genus and the species Rules for writing a scientific name correctly: Rules for writing a scientific name correctly: – Capitalize genus, but NOT species – In italics when typed – Underline when written twoNameNamingsystem BinomialNomenclature

12

13 Binomial Nomenclature

14 Dichotomous Key Used to identify organisms Used to identify organisms Characteristics given in pairs Characteristics given in pairs Read both characteristics Read both characteristics Choose “either/or” for the characteristic the organism has Choose “either/or” for the characteristic the organism has go to another set of characteristics OR identify the organism go to another set of characteristics OR identify the organism

15 Example of Dichotomous Key 1a Tentacles present – Go to 2 1b Tentacles absent – Go to 3 2a Eight Tentacles – Octopus 2b More than 8 tentacles – 3 3a Tentacles hang down – go to 4 3b Tentacles upright–Sea Anemone 4a Balloon-shaped body–Jellyfish 4b Body NOT balloon-shaped - 5

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