10.1 - Classification

Question 1

What do classification systems do?

Answer 1

• Sorts living organisms into groups
  
  • organisms within each group share characteristics

Question 2

What are the taxonomic groups?

Answer 2

Hierachical (Linnean) groups of classification

Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species

Largest → Smallest

Question 3

Give reasons for classifiying organisms.

Answer 3

1. Identify Species - allow organisms to be easily identified
2. Predict Charactersitics - members of a taxonomic group may have similar characteristics.
3. Finding Evolutionary Links - species of a group will share characteristics possibly due to evolution from common ancestors.

Question 4

What are the benefits of a single classification system?

Answer 4

Scientists can share information and research worldwide, to link organisms, in a universally accepted system.

Question 5

What are the 3 domains?

Define species

Answer 5

1. Organisms split into 3 domains (Archaea, Bacteria, Eukarya)
2. As you move down the hierachy, there are more groups per taxonomy (making more organisms similar in characteristic)
3. Ends with organisms classed as individual species

Species - group of organisms able to reproduce fertile offspring.

Question 6

How are humans classified?

Answer 6

Genus - Homo

Species - sapiens

Homosapiens

Question 7

How are organisms named?

Answer 7

Now binomial nomenclature is used

1. 1st word, genus (family name)
2. 2nd word, species (specific name)

• No 2 species have the same generic and specific name
  
  • should be in italics or underlined if handwritten with a Captial letter at the beginning.