Zoology Chap 36-Arthropods-Crustaceans

What does the term arthropod mean?

• soft
• little rings
• jointed foot
• cephalization

The tough layer on the outside of arthropod's bodies that provide protection and support

• nauplius
• exoskeleton
• skeleton
• shell

Why do arthropods have to shed their exoskeletons?

• it wears out
• they don't shed
• it limits the size they can grow
• to go from water to land environments

Arthropods demonstrate a large degree of cephalization

• true
• false

What environments do crayfish live in?

• marine
• freshwater
• terrestrial

Appendages on crayfish that serve as feelers sensitive to touch, taste and balance

• chelipeds
• mandibles
• antennae
• swimmerets

Most anterior legs on crayfish that have pincers for capturing food and defense

• chelipeds
• swimmerets
• mandibles
• maxillae

Appendages on crayfish that create water currents and function in reproduction

• swimmerets
• chelipeds
• antennae
• maxillae

How do crayfish breath?

• gills
• lungs
• through their skin

The organ in crayfish used to remove waste and excess water

• green gland
• gills
• esophagus
• cheliped