The Animal
Kingdom
Characteristics of Animals!
•
•
•
•
Eukaryotic!
Multicellular!
Specialized Cells
Heterotrophic
• MOST can move
• Grow and
develop, but
eventually reach
a fixed size
There are a couple ways animals
can be set up…
• Sac Plan- Only one opening in
digestive system!
•Tube with a Tube PlanComplete digestive system with 2
openings!
Tissue Layers!
• Ectoderm  OUTSIDE!
• Endoderm  INSIDE!
• Mesoderm  MIDDLE!
• Some animals have all 3 layers
• Some animals only have 2 layers (endo & ecto)
• Some animals don’t have any tissue layers at
all!!
ANIMAL PHYLA
B
A
C
Symmetry
Asymmetry
• No Symmetry
• Cannot be divided into mirror images
Radial Symmetry
• Arranged circularly
• Two identical halves are created no matter
how you cut it!
Bilateral Symmetry
• Definite right and left halves
• Only a cut down the middle can create mirror
images
Get ready to CLICK!!!
What type of symmetry is shown here?
1. Bilateral
2. Radial
3. Asymmetry
33%
33%
33%
Bilateral
Radial
Asymmetry
What type of symmetry is shown here?
1. Bilateral
2. Radial
3. Asymmetry
33%
33%
33%
Bilateral
Radial
Asymmetry
What type of symmetry is shown here?
1. Bilateral
2. Radial
3. Asymmetry
33%
33%
33%
Bilateral
Radial
Asymmetry
What type of symmetry is shown here?
1. Bilateral
2. Radial
3. Asymmetry
33%
33%
33%
Bilateral
Radial
Asymmetry
What type of symmetry is shown here?
1. Bilateral
2. Radial
3. Asymmetry
Which tissue layer is found on the
outside?
33%
1. Endoderm
2. Ectoderm
3. Mesoderm
33%
33%
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