| A | B |
|---|
| How does exoskeleton protect animals? | prevents water evaporation which have led them them to be 1st to live on land |
| T/F: Exoskeletons expand. | False, tight exoskeletons trap animals. |
| molting | process of shedding outgrown exoskeleton causing it to be soft for a time |
| T/F: Arthropods have segmented bodies | True, it is easiest to see in centipedes and millipedes. |
| up to what number of arthropod body sections | up to three sections: head, midsection, and hind section |
| reason why jointed appendages important | give more flexibility and allows more movement |
| reasons why appendages are important | specialized tools for moving, obtaining food, reproducing, sensing environment |
| antenna | appendage attached to head that contains sense organs |
| T/F: Scientists have identified more species of arthropods than all other species of animals combined. | True, over one million. |
| time an arthropod has protection from danger | after molting and new skeleton has not yet hardened |
