CLASSIFICATION
AN INTRODUCTION TO YEAR 7 SCIENCE
Humans classify everything.
Why do humans classify music as rock, hip-hop,
country/western, folk, rap, etc. ?
Classification helps us identify things. Sort through and
find things.
In Biology:
classification also helps demonstrate the similarities
between groups.
“Mammals” have traits in common and are distinct from
“birds”.
It helps us sort through organisms, because “cardinals are
birds while dogs are mammals”
Classifications helps us get to know different characteristics.
Dog Cavoudle
Bird Cardinal
All living things are organized into groups by
scientists as they are identified.
.
Overall, the reason scientists classify living things is
to understand the relationships between
different organisms.
TAXONOMISTS
THE SIX MAIN GROUPS ARE:
1. Mammals
2. Birds
3. Amphibians
4. Fish
5. Reptiles
6. Invertebrates
Mammals
Backbone
Warm blooded
Live young
Have hair or fur
Breath air with
lungs
Feed their
young with milk
Live on land
(mostly)
Birds
Back bone
Warm blooded
Lay eggs
Have Feathers
Beaks
2 legs, 2 wings
Hollow bones
Breaths air with
lungs
Lives on land
Reptiles
Back bone
Cold blooded
Lays eggs on
land
Have Scales
(scutes)
Breaths air with
lungs
Lives on land
Amphibians
Back bone
Cold blooded
Lay eggs in
water
Young breath
with gills and live
in water
Adults breath
through their
skin ( they have
lungs but they
are too small
and are not used
much
Skin must be
kept moist adults
live on land
Fish
Back bone
Warm blooded
Breath with gills
Have Scales
Have fins
Invertebrates
No backbone
Exoskeleton
No internal
skeleton
Soft body on
the inside
MAMMALS
Birds
REPTILES
AMPHIBIANS
FISH
INVERTEBRATES
CLASSIFICATION
KNOW THE ANIMALS YOU ARE TALKING ABOUT