Crab Extra Credit Quiz

What are crabs?

• Crustaceans

• Cephalopods

• Arachnids

• Gastropods

What is the phenomena of various crustaceans slowly evolving into crabs?

• Cephalization

• Crabification

• Carcinisation

• Carcinoma

Which type of crab's males possess one huge claw that is practically useless aside from attracting a mate?

• Snow Crab

• Kelp Crab

• Ghost Crab

• Fiddler Crab

What is a crab's diet like?

• They are generalists and will eat algae, mollusks, detritus, fungi, worms, and crustaceans

• They are generalists and will eat a wide range of small animals like mollusks, worms, and crustaceans

• They are specialists and only eat specific sea slugs, depending on species

• They are specialists and only eat specific kelp, depending on species

How many limbs do crabs have?

• Ten legs, two claws

• Eight legs, two claws

• Four legs, four claws

• Two hind legs

What is a group of crabs called?

• Murder

• Pod

• Cast

• School

Which of these is true about MOST crabs and their habitats?

• Crabs can easily survive on land or underwater

• Crabs live primarily underwater but possess both gills and lungs so they can survive on land

• Crabs live only underwater because they do not have lungs

How do crabs primarily communicate with each other?

• Specific sounds made with their legs

• Waving their claws around

• Specific sounds with their mouths

• Echolocation

How many eggs do crabs produce?

• One

• Hundreds

• Thousands

• Hundreds of thousands

What are the uses of crabs' claws (aside from defense and mating)?

• Both claws for picking things up

• One claw for picking things up, the other for grinding

• One claw for crushing prey, the other for cutting and slicing

• Both claws for crushing prey