Fact 1: Some arthropods have special excretory structures.

Fact 2: An arthropod is a member of the Phylum Arthropoda.

Given the two facts above, answer the question "What creatures have special excretory structures." with the following options: 
- warm-blooded
 - fur seals
 - phylum Cnidaria
 - phylum arthropoda
 - barnacles
 - Phylum Chordata
 - Phylum Mollusca
 - Most plants


 

    phylum arthropoda     