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Taxonomy. A way to classify things. What is taxonomy ?. Taxonomy is the branch of biology concerned with the grouping and naming of organisms Biologists who study this are called taxonomists. How did it start?.
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Taxonomy A way to classify things
What is taxonomy? Taxonomy is the branch of biology concerned with the grouping and naming of organisms Biologists who study this are called taxonomists
How did it start? People wanted to organize their world so they began grouping, or classifying everything they saw.
Things that swim Things that fly Things that crawl Things that walk on four legs Things that chew their food Things that swallow food whole Things that are toxic
Why classify? To help us study the earth To help us organize all the species we discover . . .
To give every species a name based on a standard method so scientists from different countries can talk about the same animal without confusion
Who is Carolus Linnaeus? Carolus Linnaeus was a Swedish botanist Developed a 7-level (taxa) classification system based on similarities between organisms
The Seven Level System Kingdom Phylum Class Order Family Genus Species King Phillip Called Oprah For Good Spices
Dichotomous Key • A way to tell what an organism is from it’s distinguishing characteristics
In the Plant Kingdom • Phylum is replaced with Division • Species can be divided into cultivar or variety.
Binomial Nomenclature Bi means two Nomen means name A binomial nomenclature is a classification system using two names to identify an organism
Genus… A genus consists of a group of closely related species Other animals in the Canis group include dogs and coyotes The genus name is always Capitalized
Species... A species consists of animals that can mate and produce fertile offspring Only grey wolves are known as lupus. The species name is always lowercase
An animal is known by two names… Canis lupus is the scientific name for a gray wolf. Canis is the genus name lupus is the species name This system uses a binomial nomenclature
Quick Review What are the seven taxa or levels? Who designed the system? What taxa are organisms named with?
How does it work? There are 6 broad kingdoms Every living thing that we know of fits into one of the six kingdoms Each level gets more specific as fewer organisms fit into any one group
Variety • Varieties are in the same species but have consistent differences. Naturally selected • Example: Peach and nectarines
Cultivar • Means “cultivatedvariety” • A plant or group of plants selected for desirable characteristics that can be maintained by propagation. Osteospermum 'Pink Whirls'
Yellow Lianthus croceus
Rough Rosa rugosa
DWARF Minulus nanus
Maple-like leaves Brachychiton acerifolius
Compact Penstemon compactus
Covered with a grey fuzz Lotus glaucus
WHITE Calochortus albus Dictamnus albus
Aracantha montanus Lemaireocereus montanus Mountains