Introduction

Question 1

Who created the original classification system?

Answer 1

Greek philosopher and naturalist Aristotle

Question 2

What did the original classification system divide living things into?

Answer 2

Two kingdoms: plants and animals

Question 3

What was this original division later based on?

Answer 3

It was later based mainly on the presence or absence of cell walls.

Question 4

Why was the two-kingdom division system increasingly unsatisfactory?

Answer 4

With the discovery of microscopic organisms, especially bacteria and fungi, the two-kingdom system was found to be increasingly unsatisfactory

Question 5

Name the five kingdoms

Answer 5

Monera
Fungi
Protista
Plantae (plants)
Animalia (animals)