arthropods

Which of the four stages of a butterfly is in the correct order?

• Egg, butterfly, chrysalis, caterpillar
• Egg, caterpillar, butterfly, chrysalis
• Egg, caterpillar, chrysalis, butterfly
• Chrysalis, egg, caterpillar, butterfly

Arthropods have ____________ symmetry.

• radial

• none

• jointed

• bilateral

The crab pictured is

• Male
• Female

Since the exoskeleton limits the growth of arthropods, they have to shed their exoskeletons and form a new one. This is called ____.

• defecating

• molting

• morphing

• excreting

To which phylum do sea stars and corals belong?

• Echinodermata
• Arthropoda
• Cnidaria
• Annelida

Which mollusk class includes squid, octopus, and cuttlefish?

• Chitons

• Cephalopods

• Gastropods

• Bivalves

What class of molluscs does the nautilus belong to?

• Bivalvia

• Gastropoda

• Cephalopoda

• Cnidaria

Notice the red tips on the claws of these crabs, making them....

• male
• female

Letter E is identifying what part of a crayfish?

• abdomen

• maxilliped

• pleopods

• telson

Letter G is identifying what part of a crayfish?

• abdomen

• maxilliped

• pleopods "Swimmerets"

• cheliped