Download The first modern system of classifying living things was developed in

Why do scientists classify (organize)?
For 2 reasons:
1-To organize the world around us
2-So they can communicate effectively (Understand each other).
How are living things classified?
The first modern system of classifying living things was
developed in the 18th century by a Swedish botanist named
Carolus Linnaeus. Today living things are divided into
kingdoms. How many kingdoms do you think there are? Try to
name them.
Living organisms are classified into 5 main groups. We call these
groups kingdoms. Each Kingdom is broken down into more groups and
those groups are broken down into even more groups and so on and so
forth until each organism has its own name.
Scientists classify organisms based on common characteristics
(things they have in common).
The 5 kingdoms of living things are:
Animals
Plants
Fungi
Protists
Moneran (bacteria)
Kingdom
Animal
Cell
All are Many-Celled
Movement
Can move
Food
Eat other
organisms
Reproduction
Live birth or eggs
Plants
All are many-celled
Do Not Move
Seeds or spores
Fungi
Most many-celled
Most do not
move
Make their own
food
Absorb food and
water
Protists
Most one- celled
Some can move
Bacteria
(monera)
Single cells
Some can move
Some make their
own food, others
eat other
organisms
Most feed on
other organisms
Spores
other
Humans are
in this
kingdom
Cells do not
have a cell
wall
Have a cell
wall like
plants
Cells do not
have a
nucleus
3 Things that classify us as the kingdom of animals:
1st-All have more than one cell-multicellular
2nd- All don’t make our own food-eat other organisms
3rd-All can move at some point in their lives.
Vertebrates are animals that belong to the phylum Chordata. This
means that they have a back bone.
Vertebrates are then broken up into 5 main classes:
1. Mammals
2. Birds
3. Amphibians
4. Reptiles
5. Fish
Invertebrates do not have a back bone. There are 4 main classes of
invertebrates:
1. Mollusks
2. Cnidarians-stinging cells
3. Worms
4. Arthropods-The word means jointed foot
Warm-blooded- Maintain a constant body temperature
Cold-blooded- Body temperature is close to the temperature of its
surroundings
Type
Characteristics
Examples
Mollusks
Soft body
without
bones.
Some
receive
oxygen using
gills others
absorb it
through
their skin
and a few
have lungs
Squid, snail,
clam, slugs,
octopus
Cnidarians
Soft bodies
that do not
have any hard
parts
Have
Tentacles
Have One
opening for
food and
waste
Worms
Live in damp
places
Jelly Fish,
coral,
anemones,
Portuguese
Man O War
Flatworms-flat
and thin
Roundwormscan live on land
or in water
Segmenteddivided into
segments like
the earthworm
Arthropods
Arthropod
means jointed
feet
Have bodies
that are
divided into
separate parts
Use a variety
of ways to
breathe
Moth, lobster,
Spider, all
insects