CLASSIFYING ORGANISMS
LS CH 7 SEC 4
GOAL/PURPOSE STUDENTS WILL BE ABLE TO EXPLAIN
WHY BIOLOGISTS CLASSIFY ANIMALS. RELATE THE LEVELS OF
CLASSIFICATION BETWEEN ORGANISMS
LIST CHARACTERISTICS USED TO CLASSIFY ORGANISMS INTO GROUPS.
WHY CLASSIFY? KEY- SCIENTIST HAVE IDENTIFIED
MORE THAN 1.5 MILLION SPECIES KEY- SCIENTIST GROUP ORGANISMS
BASED ON SIMILARITIES IN THEIR FEATURES, BEHAVIOR, AND DNA.
CLASSIFICATION- IS THE PROCESS OF GROUPING THINGS BASED ON THEIR SIMILARITIES
CONT’D KEY- BIOLOGIST USE CLASSIFICATION
TO ORGANIZE LIVING THINGS INTO GROUPS SO THAT THE ORGANISMS ARE EASIER TO STUDY.
TAXONOMY- IS THE SCIENTIFIC STUDY OF HOW LIVING THINGS ARE CLASSIFIED
NAMING SYSTEM KEY- TAXONOMY INVOLVES NAMING
OF THE ORGANISM. BINOMIAL NOMENCLATURE- THE
NAMING SYSTEM USED THAT GIVES EACH ORGANISM A 2-PART NAME.
EX- FELIS CONCOLOR- MOUNTAIN LION OR FELIS DOMESTICUS- HOUSE CAT
CONT,D KEY -THE FIRST WORD IN THE SYSTEM IS CALLED
THE GENUS. GENUS- IS A CLASSIFICATION GROUPING THAT
CONTAINS SIMILAR, CLOSELY RELATED ORGANISMS.
EX- ALL CATS BEGIN WITH ‘FELIS’ ‘felidae’plural KEY- THE SECOND WORD IN THE NAME OFTEN
DESCRIBES A DISTINCTIVE FEATURE OF AN ORGANISM, SUCH AS WHERE IT LIVES OR ITS APPEARANCE.
BrainPOP http://www.brainpop.com/science/diversityo
flife/classification/
LEVELS OF CLASSIFICATION KEY- MOST BIOLOGISTS TODAY
CLASSIFY ORGANISMS INTO EIGHT LEVELS
KEY- THE MORE LEVELS THAT 2 ORGANISMS SHARE, THE MORE CHARACTERISTICS THEY HAVE IN COMMON.
THREE DOMAINS (BIG CATEGORIES)
1. BACTERIA- 2. ARCHEA- 3. EUKAYRA- INCLUDES THE PROTIST,
FUNGI, PLANTS AND ANIMALS KINGDOMS KEY- ORGANISMS ARE PLACED INTO
DOMAINS AND KINGDOMS BASED ON THEIR CELL TYPE, THEIR ABILITY TO MAKE FOOD, AND THE NUMBER OF CELLS IN THEIR BODIES
DOMAIN- BACTERIA PROKARYOTES- WHOSE CELLS LACK A
NUCLEUS KEY- FOUND EVERYWHERE IN YOUR
FOOD, ON YOUR DESK, IN YOUR BODY KEY- SOME ARE AUTOTROPHS (MAKE
THEIR OWN FOOD) AND SOME ARE HETEROTROPHS (DON’T MAKE OWN FOOD)
DOMAIN- ARCHEA KEY – NAME MEANS “ANCIENT” FOUND IN DEEP OCEAN VENTS AND
OTHER EXTREME ENVIRONMENTS HOT SPRINGS, SWAMPS, INTESTINES
OF COWS UNICELLULAR PROKARYOTES, AUTO AND HETEROTROPHS
DOMAIN - EUKARYA KEY- SCIENTIST CLASSIFY PROTIST,
FUNGI, PLANTS, AND ANIMALS EUKARYOTES- ORGANISMS WITH
CELLS THAT CONTAIN NUCLEI FROM SEAWEEDS, TO MUSHROOMS,
TO TOMATOES TO DOGS ALL FALL INTO DOMAIN EUKARYA
BRAINPOP http://www.brainpop.com/science/diversityo
flife/sixkingdoms/
WRITE THE QUESTIONS AND ANSWERS 1- WHY DO BIOLOGIST CLASSIFY? 2- LIST THE LEVELS OF
CLASSIFICATION BEGINNING WITH DOMAIN
3- SEARCH THE CLASSIFICATION OF HUMANS. NAME THE EIGHT LEVELS.