Which of the following set of animals belong to a single phylum?
King crab, locust and silkworm belong to Arthropoda.
Cuttlefish belongs to Mollusca; Silverfish (Lepisma) belongs to Arthropoda; Jellyfish belongs to Cnidaria.
Earthworm belongs to Annelida; Silkworm belongs to Arthropoda; Roundworm belongs to Aschelminthes.
Sea pen and sea fan belong to Cnidaria; sea hare belongs to Mollusca