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Internal Skeleton
Exoskeleton
Protection
Protects inner organs.
Does not offer protection
from enemies.
Protects inner organs.
May offer protection from
enemies.
Growth
Grows and expands
with age.
Does not grow. Sheds
exoskeleton to grow.
Movement
Works with muscles and
joints to allow for a variety
of movements.
Plates and tubes of the
exoskeleton are joined. Inner
muscles provide movement.
Bony Comparison
Which is better, bones on the outside or bones on the inside? Look at
the chart below to decide.
The hickory horned devil caterpillar is the larva of the
regal moth. The caterpillar has an exoskeleton.
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