T4-classification

Question 1

What is classification

Answer 1

The organisation of organism into groups

Question 2

What is taxonomy

Answer 2

The classification of rgainsms into taxa: Kingdom, phylum, class, order, family, genus, species

Question 3

Name the 5 kingdoms

Answer 3

Animals, plants, fungi, protists, prokaryotes

Question 4

What happens to the number of orgaisms in each taxon as you move down the hierachy

Answer 4

The number of organims in each taxon group decreases

Question 5

Traditionally, organisms were grouped based on similarities and differences in their anatomy and behaviour. Whats the problem with this?

Answer 5

• organisms that are not closely related may look alike and behave similarly if they live in the same enviroment, e.g sharks and dolphins
• some closely related species may look very different if they live in different habitats e.g queen ants, worker ants

Question 6

What advancements in science have led scientists to reconsider the 5 kingdoms classification system

Answer 6

• microscopes
• biochemistry
• DNA and RNA analysis

Question 7

Describe the 3 domains system of classification

Answer 7

• Archaea, Bacteria, Eukarya

- DOMAIN, kindom, phylum, class, order, family, genus, species

Question 8

Which domain do eukaryotic organisms belong to

Answer 8

Eukarya

Question 9

Which domains do prokaryotic organisms belong to

Answer 9

Archaea and Bacteria

Question 10

Describe the domain bacteria

Answer 10

Consists of TRUE bacteria e.g. E.coli

Question 11

Describe the domain Archaea

Answer 11

• Consists of PRIMITIVE microorganisms

- constains extremophiles - adapted to live in extreme conditions