Which of the following tables correctly summarizes the different phyla of worms and their defining characteristics?
Which of the following is not a characteristic of an organism that belongs to the Arthropoda phylum?
A passage on the characteristics of organisms belonging to the phylum Mollusca is provided:
Organisms belonging to the phylum Mollusca have an body that has a calcareous .
Which word would be most appropriate to replace the first blank?
Which word would be most appropriate to replace the second blank?