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Classification

6th Grade Science - Classification

TermDefinition
Binomial nomenclature a two-word naming system for identifying living things
Eukaryotic having a nucleus in each of it’s cells
Invertebrates a group of organisms without backbones
Endoskeleton an internal skeleton
Exoskeleton an external skeleton
Taxonomy The science of classifying and naming organisms
Non-vascular plants plants without true roots, stems, or tubes to carry water and nutrients
Vertebrates a group of organisms with backbones
7 Classification Levels Kingdom, Phylum, Class, Order, Family, Genus, Species
Arthropods Exoskeleton , jointed appendages (crabs, insects)
Birds and Mammals Warm-blooded, vertebrates
Segmented Worms Earthworms, leeches
Reptiles scaly skin and lungs
Mollusks soft bodies, invertebrates, ex. squids, snails, slugs
2 classification levels that make up the Scientific Name Genus & Species
Number of body segments for an ARACHNID 2
Number of body segments for an INSECT 3
Number of pairs of legs for an ARACHNID 4
Number of pairs of legs for and INSECT 3
Why is it important to classify organisms? 1. to identify the wide variety of organisms 2. helps in predicting the characteristics of the organism 3. to understand how living things are connected 4. to identify if the organism is dangerous or not
Bryophyte non-vascular, do not have true roots, leaves or stems, 2-5cm in height
Tracheophytes vascular, have true roots, leaves, stems and over 5cm in height
Bryophyte examples mosses, liverworts, hornworts
Tracheophyte examples pine trees, maple trees, daisies
Created by: cbeltrani