[Campbell Biology P.765] According to the table, which phylum is characterized by having a h... | Practice Question

According to the table, which phylum is characterized by having a hemocoel and undergoing ecdysis?

  • A: Annelida (segmented worms)
  • B: Nematoda (roundworms)
  • C: Mollusca (clams, snails, squids)
  • D: Cnidaria (hydras, jellies, sea anemones, corals)

Explanation

The table's description for Nematoda roundworms explicitly states 'Hemocoel; cylindrical body with tapered ends; no circulatory system; undergo ecdysis'. This perfectly matches the criteria given in the question.