classification systems

Question 1

What is classification in biology? (2)

Answer 1

The act of arranging organisms into groups

Based on their similarities and differences

Question 2

What is taxonomy? (1)

Answer 2

The study of classification

Question 3

What are the eight levels of taxonomic hierarchy? (8)

Answer 3

1. Domain
2. Kingdom
3. Phylum
4. Class
5. Order
6. Family
7. Genus
8. Species

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Question 4

What happens as you move down the taxonomic hierarchy? (2)

Answer 4

There are more groups at each level

But fewer organisms in each group

Question 5

What is a species? (1)

Answer 5

A group that contains only one type of organism (e.g., humans, dogs)

Question 6

What is the binomial system of naming species? (3)

Answer 6

• Genus (capitalised)

species (lowercase)

E.g., Homo sapiens.

Question 7

Why is the binomial system advantageous over common names? (1)

Answer 7

Universal and recognised worldwide

Question 8

How does the binomial system help avoid confusion? (2)

Answer 8

• It avoids confusion

Caused by different common names for the same organism