Question Detail
Question
According to the 'Comparative Summary: Major Animal Phyla' table, which phylum has a 'reduced open system' for circulation?
Correct Answer
Option C is the correct answer.
Detailed Explanation
The comparative summary table lists Echinodermata as having a 'Reduced open system' for its circulatory system.
Hint
Look specifically at the 'Circulatory System' column for each phylum in the summary table.