classification Flashcards
list three reasons for classification
1) to help identify organisms
2) to better understand their relationships and connections
3) to understand organism evolution
define classification
process of arranging organisms into groups based on similar characteristics
define artificial classification
involves grouping organisms based on observable physical characteristics only
what is a dichotomous key
often used in diagrams dividing organisms into 2 groups at a time usually until each organism has been identified
only used characteristics u can see/measure
define taxonomy
study of classifying
naming describing classifying of organisms
what classification system is commonly used
Linnean classification
list the 8 levels of the linnean classification system
domain, kingdom, phylum, class, order, family, genus, species
define prokaryotes (5)
organisms possessing genetic material not bound by a membrane within cell
single cell/unicellular
does not have nucleus
contains bacteria kingdom
before nucleus
define eukaryotes
organisms possessing genetic material bound by double membrane
multicellular
have nucleus
contains animal plant fungi protist kingdoms
true nucleus
what does “kary” mean
means nucleus of a cell
list 5 kingdoms
bacteria, animal, fungi, plants, protists
why do viruses not belong to any kingdom
have no ability to carry out grimner on their own
needs an organism and cannot survive in a test tube on their own
define chordates
phylum of the animal kingdom
commonly known as vertebrates
include all animals with a backbone
divided into 5 classes
what are the five classes of chordates
animals birds reptiles amphibians fish
what is the scientific name for warm blooded
homeothermic