Crayfish Test Review

A crayfish’s hard, shell-like covering is called a(n) _______.

a. swimmeretsb. carapacec. cephalothoraxd. exoskeleton

Exoskeleton

A crayfish’s smaller pairs of legs are used for all of the following

EXCEPT…a. walkingb. hearingc. tearing food apartd. cleaning themselves

Hearing

What is one way crayfish avoid danger?

Crayfish avoid danger in the following ways:

a. opening and closing clawsb. fighting with clawsc. waving their claws

We have learned that crayfish are able to grow back body parts.

What is this called?

a. regenerateb. regurgitatec. retaliated. regerminate

regenerate

A female crayfish who has eggs is said to be

________.a. in mudb. in berryc. in peachesd. in jam

in berry

The exoskeleton does not grow as the crayfish eats and grows.

Crayfish must __________.

a. moltb. hibernate

c. burrowd. shake its shell off

molt

A crayfish’s eyes are on ________.

a. the tailb. clawsc. short stalksd. the swimmerets

short stalks

Crayfish are crustaceans. Which of the following is NOT a member of the crustacean family?

Lobster Crayfish

Shrimp Armadillo

Armadillo

What do crayfish breathe with?

Gills

There are about how many species of crayfish in the United States?

500

Other than bait, what other use do crayfish have to humans?

Humans eat crayfish

All of these animals are enemies of crayfish except_____.

Fish AlligatorsRaccoons Mice

Mice

What does the crayfishes fan-like tail help it to do?

Move Backward

A crayfish uses its claws for all of the following except ____.

Catching food self-defense

Fighting To attract a mate

Attract a mate

What type of eye does a crayfish have?

Compound Eye

What are two other names for crayfish?

• Crawfish or Crawdads

Do crayfish hunt during the day or at night?

• At night

How long can crayfish live?

• Anywhere between 2 and 20 years

What are three different colors of crayfish?

• They can be pink, white, red, black, blue, or green

What are the two MAIN body parts of a crayfish?

Hint: the first part is a combination of the head and thorax.

• The cephalothorax and the abdomen

What family do crayfish belong to?

• Crustaceans

True or false: Crayfish love warm weather and sunshine.

• False!

How does a crayfish’s antenna help him/ her?

• It helps him to smell, feel, and taste.