3.4.5 (taxonomy)

Question 1

Species

Answer 1

Individuals able to breed together to produce fertile offspring

Question 2

Why do we use a classification system?

Answer 2

Easier to study
Can make more sense of the living world
Can understand how living things are related
Gives scientists a common language

Question 3

Carl Linnaeus

Answer 3

Observed organisms and organised them into a hierachical structure based on structure and characteristics
Kingdom
Thylum
Class
Order
Family
Genus
Species

Question 4

Carl Woese

Answer 4

Developed the 3 domain system based on evidence from DNA
Archea, bacteria, eukaryota
Domains are larger than kingdoms

Question 5

Binomial naming system

Answer 5

Genus species
First word always has a capital letter
Second word in lower case
Written in italics or underlined

Question 6

Phylogenetic group

Answer 6

A group with evolutionary links

Question 7

Taxon

Answer 7

A group within a classification system
Plural = taxa

Question 8

Hierachy

Answer 8

Groups within groups/ smaller groups in larger groups with no overlap

Question 9

Purpose of courtship behaviour

Answer 9

Allows individuals to recognise members of the same species, identify a mate capable of breeding, form a pair bond and synchronise mating

Question 10

Courtship behaviour- recognising members of same species

Answer 10

Ensures mating only occurs between members of same species
Therefore producing fertile offspring

Question 11

Courtship behaviour- finding a mate capable of breeding

Answer 11

Both partners need to be sexually mature, fertile and receptive to mating
To breed at right time of year when theres enpugh food for offspring and correct temperature

Question 12

Courtship behaviour- form a pair bond and synchronise mating

Answer 12

Successful mating and raising offspring
Some bonds last a life time
Pick partners with best characteristics and therefore best genes

Ensures mating occurs when probability of sperm and egg meeting is highest