Chapter 18: Classification Study Guide

Unlock all answers in this set

Unlock answers
question
What is taxonomy?
answer
discipline of classifying organisms and assigning each organism a universally accepted name
question
What two things does a good system of classification always include?
answer
a. scientifically names them b. groups them in a logical manner
question
What is Binomial Nomenclature and what is it used for?
answer
-each species is assigned a two-part scientific name -to name the animals in scientific names (upper and lowercase)
question
The first of the two Names stands for the organsims_________.
answer
genus
question
The second of the names stands for the organsims_________.
answer
species
question
What is taxon?
answer
group or level of organization into which organisms are classified
question
How many taxonomic categories were present in Linnaeus's systems of classification?
answer
seven
question
What were the two main kingdoms listed in Linnaeus's system of classification?
answer
a. kingdom b. species
question
List Linnaeus's levels of taxonomy from broadest tot most specific.
answer
a. kingdom b. phylum c. class d. order e. family f. genus g. species
question
What is evolutionary classification?
answer
method of grouping organisms together according to their evolutionary history
question
What is cladistic anaysis and what does it use to classify organisms?
answer
Identifies and considers only those characteristics of organisms that are evolutionary innovation
question
What are derived characters?
answer
characteristic that appears in recent parts of a lineage, but not in its older members
question
If organsims share similar genes what does this tell us about the organism?
answer
that they are common ancestors
question
What is a molecular clock and how is it used?
answer
-model that DNA comparisions to estimate the length of time that two species have been evolving independently -this process relies on mutation that occurs
question
What are the six kingdoms identified today?
answer
a. animalia b. plantae c. fungi d. prostists e. eubacteria f. archaebacteria
question
Describe key characteristics of each of the six kingdoms?
answer
a. Plants- make their own food. b. Animals- eat other organisms. c. Archaebacteria- found in extreme environments on Earth. d. Eubacteria- true bacteria. e. Fungi- have membrane-bound organelles. f. Protists- all microscopic organisms that aren't bacteria, plants, animals or fungi.
question
What is a domain?
answer
most inclusive taxonomic category; larger than a kingdom
question
What are the three domains that make up the three domain system?
answer
a. bacteria b. archea c. eukarya
question
Which kingdoms belong in each of the three domains?
answer
-bacteria=eubacteria -archea=archeabacteria -eukarya=protists, fungi, plants, and animals
Get an explanation on any task
Get unstuck with the help of our AI assistant in seconds
New