1. Lesson 1: How are Living Things Classified?
Chapter 1/Unit
Lesson 1: How are Living Things Classified?

2. What does it mean to classify living things?
To classify means “to put things in groups according to how they are similar or different.”

3. Classifying Living Things
Scientists, at first, classified all organisms into either the animal kingdom or plant kingdom.
Kingdoms
Animal Kingdom
Plant Kingdom

4. Animals Plants Animals need to eat
Most of them move to get their food.
Plants
Plants make their own food.
They can’t move around.
This way to classify worked for most living things, but not for all ! Why?

5. Fungi Kingdom
For example, fungi, type of organisms that can’t move (like plants), but they can’t also make their own food.
So, they became their own kingdom!

6. Fungi

7. Microscopic Organisms
When microscopes were invented, scientists found organisms that had never been seen before!

8. Single-celled Organisms
Bacteria kingdom
Protist Kingdom

9. Bacteria Bacteria are the most numerous organisms on Earth.
Billions of them can be found in just one handful of soil !

10. Cyanobacteria
Live in water and make their own food.

11. Spirochetes Bacteria
any of a group of spiral-shaped bacteria, they are harmful bacteria, they can cause us diseases.

12. Plural Singular Bacteria Protists Fungi Mitochondria Bacterium Protist
Fungus
Mitochondrion