Question Detail
Question
Which group of animals is specifically cited in the slides as an example of organisms with an OPEN circulatory system?
Correct Answer
Option C is the correct answer.
Detailed Explanation
Molluscs are cited as an example of organisms with an open circulatory system. In open circulation, blood flows more or less freely between the tissues before eventually returning to the heart, rather than being contained entirely within vessels.
Hint
This phylum includes snails, clams, and squid, many of which have open circulation.