2. How many features common to both cows and dolphins
can you think of?
Common features
Compare a cow and a dolphin, you might think they do not have
many things in common but you will be surprised.
4. Cows and dolphins have several features in common.
Many other organisms also share common features.
Scientists use common features to put organisms into groups.
Grouping organisms based on their common features is called
classification.
What is classification?
6. • Which is the
biggest group?
• Which is the
smallest
group?
7. Helpful way to remember the 7 levels
•King Philip Came Over For Green
Skittles.
•Kids Playing Catch On Freeway
Get Squashed.
8. The classification system begins with very big groups that
include a lot of organisms and then moves down to
smaller groups made up of fewer organisms.
The biggest groups are called the kingdoms.
All living things are classified into five different kingdoms.
The classification system
plants Protoctistaanimals Monerafungi
living things
10. Animal classification
InvertebratesVertebrates
Animals
Invertebrates are animals
that do not have a backbone.
They have soft inner bodies
which are held in shape by a
flexible covering of outer cells
or by a hard covering called
an exoskeleton.
Vertebrates are animals
that have a backbone.
They have a firm body
because of the muscles
that connect to their
Skeleton (made of bone or
cartilage).
The animal kingdom is divided into two groups:
12. 1) Arthropods
ArachnidsInsectsCrustaceansMyriapods
- Includes spiders and
scorpions, mites
and ticks.
- Do not have
antennae or wings.
- Have four pairs of
legs.
- Have one pair of
antennae.
- Have three pairs of
legs.
- They have up to two
pair of wings.
- Have two pair of
antennae.
- Ex. Lobster and
woodlouse
- Have one pair of
antennae.
- Have long
cylindrical or flat
bodies.
- Many legs
- Ex. Centipedes and
millipedes.
Invertebrates
13. 2) Annelids
- They have long, thin, soft bodies divided into segments or rings.
- Example: Earthworms
14. 3) Nematodes
- They have thin, cylindrical bodies not divided into segments or rings.
18. 7) Molluscs
- The group gets the name from the Latin word mollis which means
soft.
- Most molluscs have a shell to protect their soft bodies.
- Examples: Snail, slug and octopus.