Quiz AnswersMollusks, Worms, Arthropods, Echinoderms
1. The most colorful of all of the mollusks is the
A. chiton
B. nautilus
C. nudibranch
D. slug
2. The giant clam is the largest bivalve in the world. How big can they grow?
A. up to 1 foot
B. up to 2 feet
C. up to 3 feet
D. up to 4 feet
3. Which mollusk commonly changes color as a form of communication?
A. cuttlefish
B. nautilus
C. squid
D. octopus
4. Which univalve produces a large beautiful pinkish shell that is sought by shell-collectors?
A. snail
B. conch
C. limpet
D. whelk
5. How many species of squid do scientists estimate exist?
A. 5
B. 50
C. 500
D. 5000
6. How long can a tapeworm grow?
A. 3 centimeters
B. 3 meters
C. 30 centimeters
D. 30 meters
7. How much do medicinal leeches commonly sell for?
A. $7.50 per leech
B. $10.50 per leech
C. $70.50 per leech
D. $100.50 per leech
8. Approximately how long do doctors keep a leech on a patient to suck blood before replacing with a fresh leech?
A. 5 minutes
B. 10 minutes
C. 15 minutes
D. 20 minutes
9. Which of the following is a food that sea stars do not eat?
A. oysters
B. clams
C. cuttlefish
D. mussels
10. The only type of worm that can regenerate its head is the
A. flatworm
B. tapeworm
C. earthworm
D. tubeworm
 

QuizMollusks, Worms, Arthropods, Echinoderms
1. The most colorful of all of the mollusks is the
A. chiton
B. nautilus
C. nudibranch
D. slug
2. The giant clam is the largest bivalve in the world. How big can they grow?
A. up to 1 foot
B. up to 2 feet
C. up to 3 feet
D. up to 4 feet
3. Which mollusk commonly changes color as a form of communication?
A. cuttlefish
B. nautilus
C. squid
D. octopus
4. Which univalve produces a large beautiful pinkish shell that is sought by shell-collectors?
A. snail
B. conch
C. limpet
D. whelk
5. How many species of squid do scientists estimate exist?
A. 5
B. 50
C. 500
D. 5000
6. How long can a tapeworm grow?
A. 3 centimeters
B. 3 meters
C. 30 centimeters
D. 30 meters
7. How much do medicinal leeches commonly sell for?
A. $7.50 per leech
B. $10.50 per leech
C. $70.50 per leech
D. $100.50 per leech
8. Approximately how long do doctors keep a leech on a patient to suck blood before replacing with a fresh leech?
A. 5 minutes
B. 10 minutes
C. 15 minutes
D. 20 minutes
9. Which of the following is a food that sea stars do not eat?
A. oysters
B. clams
C. cuttlefish
D. mussels
10. The only type of worm that can regenerate its head is the
A. flatworm
B. tapeworm
C. earthworm
D. tubeworm