Presentation on external structure, exoskeleton.

1. EXOSKELETONS
E X T E R N A L S T R U C T U R E S A N D T H E I R F U N C T I O N
I N A N I M A L S # 4

2. WHAT IS AN EXOSKELETON?
• It is a hard external covering that protects the body of an animal without
a skeleton.
A snail does not have a
skeleton inside its body so the
exoskeleton provides
protection.
(Ghanavati, 2011)

3. WHAT DOES AN EXOSKELETON DO?
• An exoskeleton can have the following functions:
– protect the body from the sun
– protect wings from damage
– provide camouflage
– create a waterproof barrier
(Pixabay, 2003) (Rosa de Mello, 2001)
A ladybugs
exoskeleton protects
its wings.
A crabs exoskeleton
provides a
waterproof barrier.

4. REFERENCE
• Snail
– Ghanavati, D. (2011). Brown and Gray Snail on Green Plant Branch [Photograph]. Retrieved
from https://www.pexels.com/photo/snail-gastropod-slow-garden-108141/
• Ladybug
– Pixabay. (2003). Red and Black Bug [Photograph]. Retrieved from
https://www.pexels.com/photo/red-and-black-bug-36485/
• Crab
– Rosa de Mello, A. (2001). Crab on Beach [Photograph]. Retrieved from
https://www.pexels.com/photo/crab-on-beach-306908/