Arthropoda: Crustacea, Arachnida, and Insecta p1

What type of circulatory system do crustaceans have?

• Open

• Closed

• None

• 1/2 open, 1/2 closed

Lobsters often have two different size claws to:

• Eat, breathe

• Pinch, crush

• Sense, move

• Crush, breathe

How can you determine the sex of a crab?

• Size of its claws

• Size of its antennae

• Size of its abdomen

• Size of its exoskeleton

Specialized mouth parts in crustaceans:

• Cephalothoraxs

• Carapaces

• Swimmerets

• Maxillipeds

What type of symmetry do crustaceans have?

• Bilateral

• Radial

• Asymmetry

• Frontal

What do crustaceans do to grow larger?

• Attach themselves to substrates

• Reproduce

• Molt

• Use jointed appendages

All crustaceans:

• have stinging tentacles

• are soft-bodied

• have jointed appendages

• are bioluminescent

Which of these is NOT a true crustacean?

• Barnacle

• Copepod

• Hermit crab

• Horseshoe crab

A very important crustacean that whales consume while filter-feeding is...

• Copepods

• Barnacles

• Krill

• Hermit crabs

Barnacles use their ___________ to help them get food.

• Cilia

• Cirri

• Claws

• Carapace