Which group of molluscs consists of intelligent, active marine predators with a closed circulatory system?
a. chitons
b. gastropods
c. bivalves
d. cephalopods
Answer: d. cephalopods
Which group of molluscs consists of intelligent, active marine predators with a closed circulatory system?
a. chitons
b. gastropods
c. bivalves
d. cephalopods
Answer: d. cephalopods