Phylum Athropoda: Crustaceans

How do crayfish breath?

• gills
• lungs
• through their skin

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

• chelipeds
• mandibles
• antennae
• swimmerets

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

How many pair of antennae do crustaceans have>

• 4
• 2
• 1
• 3

The structures labeled E are the

• swimmerets
• walking legs
• maxillae
• uropods

What phylum are crustaceans a part of?

• Arachnids
• Arthropods
• Animals
• Invertebrates

What is molting?

• The process in which arthropods reproduce
• The process in which arthropods shed their outer covering and grow a larger one.
• The process in which larval forms develop into adult forms
• The process in which arthropods breathe

What two characteristics do all Arthropods have?

• two legs per body segment
• jointed legs and a cephalothorax
• three body segments and metamorphosis
• jointed legs and segmented bodies

All arthropods have segmented bodies, jointed appendages, and ________________. 

• tails
• lungs
• wings
• an exoskelton

What type of skeleton do Arthropods have?

• Endoskeleton made of chitin
• Hydrostatic skeleton
• Exoskeleton made of calcium carbonate
• Exoskeleton made of chitin