genbio week 4 Flashcards
scientists need to organize over how many organisms?
2 million
grouping of organisms based on their common ancestors and characteristics
classification
the grouping of organisms or classification bases on ____, ____, and _____
size, shape, appearance
who classified organism as either plants (plantae) or animals (animalia)?
aristotle
aristotle classified organism as either ______– or —–
plantae or animalia
who developed the hierarchal system which classifies in levels based on their physical similarities?
carolus linneaus
what is the linneaus system of classiciation?
kingdom, phylus, class, order, family, genus, species which is respectively from generl to specific
which is the level more specific than genus?
specific epither or species
which is the next level which is more general than the family?
order
which levels are more specific than order?
genus, species, family
which is the most general level?
kingdom
in modern classification, biologists now group organisms according to their _________
evolutionary relationships
what are the criteria that scientist use to classify organisms?
structural similarities, biochemical analysis, and embryology
one of the criteria; similar fossils or anatomy
structural similarities
one of the criteria; DNA, proteins, and amino acids
biochemical analysis
one of the criteria; similar embryos
embryology
the study of the evolutionary relationships among the group of organisms
phylogeny
is a construct that represents a “tree-like” structure that shows the evolutionary relationships among a group of organisms
phylogenic tree
phylogenic tree shows ________ traits deveoped
when in time
you can use _______ to find the most primitive and find the organisms that are the most closely related
phylogenic tree
old, simple
primitive
in the phyogenic tree, the most primitive is on the
bottom left
in the phylogenic tree, the most recent species are to be found in the ____
top right
what is the classification based on common ancestry?
cladistics is the classification which is based on common ancestry
it is a common method to make evolutional trees called
cladogram
classification is based on desired traits and species is placed in order that they descended from common ancestor
cladistics
