GI: Classification of Organisms COPY

Question 1

Phylogeny

Answer 1

The study of evolutionary history of groups of organisms.

Question 2

What does a phylogenetic tree show?

Answer 2

Organisms which have evolved from common ancestors

Question 3

Taxonomy

Answer 3

The science of classification - grouping together related organisms.

Question 4

How many taxons are used to classify organisms?

Answer 4

8

Question 5

What are the three domains?

Answer 5

Eukarya, bacteria and archaea

Question 6

List the taxa used to classify organisms:

Answer 6

Domain

Kingdom

Phylum

Class

Order

Family

Genus

Species

Question 7

What nomenclature is used for classification?

Answer 7

Binomial system

Question 8

Describe the binomial system:

Answer 8

First part = genus + capital letter

Second part = species + lower case

Written in italics or underlined if handwritten

Question 9

Why is courtship behaviour carried out?

Answer 9

To attract mates of the right species

Question 10

Why is it important that courtship behaviour is species specific?

Answer 10

Prevents interbreeding and makes reproduction more successful.

Question 11

Why can courtship behaviour be used to help classify species?

Answer 11

Because courtships are species specific.

The more similar the courtship behaviour, the more closely related species are.