arthropods arthropods (phylum arthropoda) make up the largest phylum of animals – 3 out of every 4...
Post on 19-Dec-2015
257 Views
Preview:
TRANSCRIPT
Arthropods
• Arthropods (Phylum Arthropoda) make up the largest phylum of animals– 3 out of every 4 animals are arthropods
• The largest group of Arthropods are the insects, which are rare in the sea
• The overwhelming majority of Arthropods in the ocean are crustaceans (class Crustacea)– Shrimp, lobster, crabs, copepods, barnacles
Phylum Arthropoda
• Arthropod means “jointed foot”• Jointed appendages such as legs and
mouthparts• Body is segmented and bilaterally-symmetric• Arthropods possess a tough, external
skeleton, or exoskeleton – Composed of chitin– Secreted by underlying tissue, must molt or shed
top related