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Diversity of Living Things

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Presentation on theme: "Diversity of Living Things"— Presentation transcript:

1 Diversity of Living Things
UNIT 2: MICROBIOLOGY Diversity of Living Things

2 Taxonomy pg. 98 - 101 Taxonomic System Definition:
Taxonomy is the science of classifying organisms (both living & extinct). Taxonomic System developed by Carl Linnaeus ( ) in Latin based his classification on structural and physical features the more features organisms have in common, the closer their relationship

3 Binomial Nomenclature (common worldwide language)
two terms: The Scientific Name: first part of name – called the genus first letter is always capitalized this part can be written alone (e.x. Acer meaning all maple trees, Ursus = all bears) second part of name – called the species is not capitalized (lowercase) is never written alone (e.x. Acer rubrum, referring to a red maple, Ursus americanus = North American Black Bears) note: both parts of the scientific name are italicized

4 Species a group of organisms with similar features that can interbreed and produce fertile offspring SPECIES: = + horse donkey mules

5 Binomial Nomenclature
Examples Genus Species Abbreviated 1. Homo sapiens H. sapiens 2. Castor canadensis C. canadensis 3. Escherichia coli E. coli 1 2 3

6 7 Levels of Classification
Kingdom Phylum Class Order Family Genus Species Largest / General Smallest / Specific

7 Taxonomic Classifications
Man Gorilla Chimpanzee Orangutan Baboon Kingdom Animalia Phyllum Chordata Class Mammalia Order Primates Family Hominidae Subfamily Homininae Ponginae Cercopithecidae Genus Homo Pan Pongo Papio Species sapiens gorilla troglodytes pygmaeus ursinus Gorillas & Chimps have 98% same DNA as us

8 Dichotomous Key two-part key used to identify living things
a series of choices must be made each choice leads to a new branch of the key end result is the name of the organism being identified

9

10 Let’s try a few more keys ...
Activity 2.2 – Using a Classification Key, Protists p. 102 Classifying Whales (Handout) Classifying Fish (Handout) Classifying Sharks (Handout)

11 Homework Homework: Text Page 101 # 1 – 7

12 SHARK ANATOMY first dorsal fin second dorsal fin pectoral fin pelvic
anal caudal fin Dorsal side Ventral side gill slits

13 Pristiophoridae Alopidae Rajidae Carcharinidae Scyliorhinidae
Rhinocodontidae Isuridae Squalidae Dasvatidae Scanapanorhynchidae Pseudotriakidae Hexanchidae Sphyrnidae Mobilidae November 13, 2018 SBI3C 13

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