Lesson 5 Taxonomy and Systematics Part 1.pptx

Taxonomy and Systematics - General Biology 2 3rd Grading Lesson 5

1. What is the origin and the meaning of your name?

2. UNLOCKING: ● How will you classify objects or items commonly encountered or used in everyday life such as those found in homes, schools and neighborhood/communities . Examples: Books in the Library (can be classified based on Dewey decimal system) Kitchen utensils (can be classified based on their use--- spoons, forks, ladles, pots, pans)

3. LESSON 5 SYSTEMATICS BASED ON EVOLUTIONARY RELATIONSHIPS

4. LEARNING OBJECTIVES: Recognize how comparisons of similarities and differences can suggest evolutionary relationships Acknowledge your uniqueness as a person Classify organisms into hierarchy

5. Systematics and Biological Characteristics Systematics: Study of the diversity of organisms and their evolutionary relationships Classification ☀︎ Arranging organisms into groups based on their similarities reflecting evolutionary relationships among lineages; allows us to put organisms with similar features into groups .

6. Taxonomy Hierarchical system ☀︎ Component of systematics focusing on the theory and practice of classification; involves the naming of organisms ( nomenclature ) ☀︎ Science of finding, describing, classifying and naming organisms , includes studying the relationships between taxa and the principles underlying such a classification Taxon/Taxa - a group of one or more populations of organisms seen by taxonomists to form a unit ☀︎ Classify organisms in a hierarchical system or in taxonomic ranks ☀︎ Based on shared characteristics or on phylogenetic relationships inferred from fossil records or established by genetic analysis .

7. EARLY TAXONOMIST Emperor Shen Nung of China (around 3000 BC) ☀︎ Classified plants based on practical uses — for food, as herbal medicine, for shelter and others. ☀︎ Author of early pharmacopoeia – hundreds of medicines derived from minerals, plants, and animals ☀︎ He is said to have tasted hundreds of herbs to test their medicinal value .