Classification

Question 1

Who was the original classification system created by?
What did it propose and what was the system ?

Answer 1

Carl Linnaeus = Linnaean system
Grouped living things according there characteristic and structure

Kingdom
Phylum
class
order
family
genus
species King Phillip came over for good soup

Question 2

Why have scientists put forward new models of classification ?

Answer 2

As knowledge of biochemical processes that take place in inside organisms have developed and microscopes improved

Question 3

What was the new model of classification, who created it and why ?

Answer 3

3 - domain system - created by Carl Woese
Evidence gathered from new chemical analyse techniques such as RNA sequence analysis , he found that species traditionally thought to be closely related are not as closely related as we thought

Question 4

In the three domain system, what are the 3 domains ?

Answer 4

1) Archaea - organisms in this domain are primitive bacteria- found in extreme places ( hot springs, salt lakes )

2) Bacteria - contains true bacteria like E. coli. Look similar to archaea but lots of biochemical differences between both

3) Eukaryota - broad range of organisms including fungi. plants, animals and protists.

Dear King Phillip came over for good soup

Question 5

How are organisms named and why are they named like that ??

Answer 5

Using a binomial system = two part Latin name
1) genus = information about organisms ancestry 2) species
Humans = Homo sapiens

2) binomial system used worldwide so scientists in diff countries or with diff languages refer to same name - avoiding confusion

Question 6

What do evolutionary trees show ?

Answer 6

How scientists think different species are related to each other

They show common ancestor, The more recent an ancestor = the more related the two species = more characteristics they potentially share

Question 7

What data do scientists use for living organisms and extinct species ?

Answer 7

1) current classification data
2) fossil record