Module 4: Classification and Evolution(Phylogeny & Evidence for Evolution)

Question 1

Phylogeny is the name given to …

Therefore , phylogenetics is the study of …

A phylogenetic tree is a diagram used to represent …

Answer 1

the evolutionary relationships between organisms

the evolutionary history of groups of organisms

the evolutionary relationships between organisms

Question 2

What do phylogenetic trees show ?

In phylogenetic trees , state where the earliest species are found and where the most recent species are found

Answer 2

that different species have evolved from a common ancestor

Earliest-at the base of the tree
Most recent-at the tips of the branches

Question 3

Advantages of phylogenetic classification …

Phylogeny can be done without reference to what?

Answer 3

the Linnean classification system

Question 4

What does classification use knowledge of phylogeny for?

Answer 4

to confirm the classification groups are correct or causes them to be changed

Question 5

State and explain 2 other advantages of phylogenetic classification

(HINT: point 2-more of a weakness of the Linnean system)

Answer 5

-it produces a continuous tree whereas classification requires discrete taxonomical groups
this means scientists aren’t forced to put organisms into groups they don’t fully belong/fit in

-the hierarchal nature of the Linnean classification system can be misleading as it implies that different groups within the same rank are equivalent when they aren’t