3. Invertebrates

IDevice Icon 3. Invertebrates
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3.1.- How invertebrates protect their bodies.

Invertebrates have no bones. Some invertebrates have a protective covering.

  • Shells are hard and strong.

  • Exoskeletons can be thick or thin. Crabs have thick exoskeletons. Beetles have thin exoskeletons.

Some invertebrates, like jellyfish and worms, have no protective covering.

 

 

 



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Invertebrates have no . Some invertebrates have a protective .

  • are hard and strong.

  • can be thick or thin. Crabs have thick . Beetles have thin exoskeletons.

Some invertebrates, like and worms, have no protective covering.

  

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Andrés Egea - Yolanda Marcos 2008