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14 Cards in this Set

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  • Back
binomial nomenclature
a system of naming organisms that uses the genus
name and a species identifier
blastopore
a depression formed when cells of the blastula move inward
blastula
a hollow ball of cells formed when a zygote undergoes repeated
cycles of cell division
cladistics
a system of phylogenetic classification using shared derived
characters and the recency of ancestry is the sole criterion for grouping
taxa
cladogram
ancestry diagram made by means of cladistic analysis
class
in taxonomy, a group of related orders
derived character
a feature that evolved only within the group under
consideration, such as the feathers of birds
division
in taxonomy, a grouping of similar classes of plants
domain
in the three-domain system of classification, one of three broad groups
that all living things fall into on the basis of rRNA analysis
domain Archaea
known in the six kingdom system as kingdom
Archaebacteria
domain Bacteria
known in the six kingdom system as kingdom
Eubacteria
domain Eukarya
group consisting of all protist, fungi, plants and
animals
echinoderm
a radially symmetrical marine invertebrate with an endoskeleton, a
water-vascular system and tube feet
eubacteria
the lineage of prokaryotes that includes all contemporary bacteria
except archaebacteria