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edc8b513bfee7d2c5be70d09ed4b3fa3

edc8b513bfee7d2c5be70d09ed4b3fa3 - Chapter18 23:40:00...

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Chapter 18 01/03/2011 23:40:00 Systematics: Seeking Order Amidst Diversity Taxonomy o Taxonomy is the branch of biology concerned with naming  and classifying the diverse forms of life on our planet. ex: we are  homo sapiens a red fish is a  Sciaenops ocellatus   Agra sasquatch  (it has big feet),  Agra phobia,  and  Agra vation Apolysis humbug…..( names sound funny or have  funny meanings) o There are many ways that things may be grouped: Example: plants versus animals: One of the early classifications placed the animals in  one group and the plants in another. The bacteria,  fungi and many protists were considered plants while  some of the protists were grouped with the animals. o 5 Kingdoms of Taxonomy:
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Until recently, the most common taxonomic system  was based on five kingdoms o **Now there are 3 domains: With those five kingdoms placed in 3 different  domains. The 3 domains and the kingdoms within  them each have observably different attributes that  define them. Figure 18-5: the 3 domains of life Bacteria, Archaea, Eukarya. Eukarya consists of  animals, fungi, plants, and protists
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D o m a i n K i n g d o m Ce ll  Ty pe C el N u m b er Nutritio Method A r c h a e a 3 Pr ok ar yot ic U ni c el lu la r Absorp/p hotosyn B a c t e r i a 1 3 - 1 5 Pr ok ar yot ic U ni c el lu la r Absorp/p hotosyn E u k a r y a P r o ti s t a Eu ka ry oti U ni c el lu la r Absorp/p hotosyn
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F u n g i Eu ka ry oti c M ul ti c el l. absorpti on P l a n t a e Eu ka ry oti c M ul ti c el l. ? see  email a n i m a li a Eu ka ry oti c M ul ti c el l. ? see  email
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o Taxonomic Categories: 1. The organixation of taxonomic grouping arranges  organisms in sets. 2. Each set is then grouped with other sets into a  larger set. **3. The major taxonomic categories from most  inclusive (biggest set) to least inclusive (smallest set)  are: **** Taxonomic categories: o Domain   Kingdom   Phylum (Division)   Class   Order   Family   Genus   Species o D     ear K ing P hil C ame O ver F or G ene’s S pecial Table 18-1 Classification of Selected Organisms, Reflecting Their  Degree of Relatedness ***Test question*** What do they all have in common? All  eukaryotic!!! Human, Chimpanzee, Wolf, Fruit Fly, Sequoia Tree, Sunflower Genus:
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a. The category genus groups together closely related organisms  which may or may not interbreed. b. This separation based on interbreeding defines the category  species.
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