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SBI3U Course Textbook: Biology 11, McGraw-Hill Ryerson.

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Presentation on theme: "SBI3U Course Textbook: Biology 11, McGraw-Hill Ryerson."— Presentation transcript:

1 SBI3U Course Textbook: Biology 11, McGraw-Hill Ryerson

2 Diversity of Living Things

3 What is diversity? In small groups, create your own definition of diversity

4 Why is diversity important? Continue discussion in groups

5 Is the Earth losing its diversity?

6 Food, Inc Documentary Trailer http://www.youtube.com/watch?v=QqQVll-MP3I

7 Jonathan Drori: Why we're storing billions of seeds TED http://www.ted.com/talks/lang/eng/jonathan_drori_why_we _re_storing_billions_of_seeds.html http://www.ted.com/talks/lang/eng/jonathan_drori_why_we _re_storing_billions_of_seeds.html

8 Section 1.1 Identifying, Naming, and Classifying Species WITHOUT using your Macs, define the word species

9 Section 1.1 Identifying, Naming, and Classifying Species Species: a group of organism that can interbreed in nature and produce fertile offspring

10 Section 1.1 Identifying, Naming, and Classifying Species Species: a group of organisms that can interbreed in nature and produce fertile offspring Currently, scientists have identified 2 million species on Earth Scientists estimate there are 5 million to 20 million species – so there are countless species we have yet to discover

11 Identifying Species - whoa Do scientists around the world agree on the definition of species? Scientists agree on various definitions called species concepts 3 types of Species Concepts: Morphological species concept Biological species concept Phylogenetic species concept

12 Identifying Species - whoa 3 types of Species Concepts: Morphological species concept Biological species concept Phylogenetic species concept --------- Read page 11 independently followed by group discussion

13 Naming Species Who are these guys?

14 Naming Species This species has several different names: groundhog, woodchuck, whistle pig, forest marmot, marmota monax …

15 System of Classifying Names: Binomial Nomenclature Taxanomy: the branch of biology that identifies, names, and classifies species based on natural features Genus: (plural genera) taxonomic group of a closely related species Carolus Linnaeus (1700s), referred to as the Father of Taxonomy

16 Binomial Nomenclature: a two-part naming system - first name is the scientific name (genus name) followed by a second name that identifies the particular species Genus name is capitalized, species name is in lower case letters, both italicized Example: Homo sapiens Classification the grouping of organisms based on a set of criteria that helps to organize and indicate evolutionary relationships System of Classifying Names: Binomial Nomenclature

17 In-class/Homework Part 1: Read pages 10-15 Complete questions #1, 2, and 4 on page 13

18 Classifying Species Activity Activity 1.1, page 13, complete in groups of 2

19 Hierarchical Classification Un-nested Classification: Hockey Soccer Tennis … a method of classifying organisms – species are arranged from most general to most specific Sports Nested Classification: Hockey Soccer Golf Sports Team Sports Tennis Non-team sports

20 Classifying Organisms through Taxonomic Categories Rank: a level in a classification scheme, such as phylum or order Taxon: a named group of organisms such as a phylum Chordata or order Rodentia

21 In-class/Homework Part 2: Complete question #6 on page 16


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