Articles > Arthropod definition – quiz Arthropod definition – quiz Quiz Choose the best answer. 1. Which of the following is NOT a feature of an arthropod? Exoskeleton Segmentation Closed circulatory system 2. Includes spiders and scorpions Trilobita Mandibulata Chelicerata 3. Insects belong to this Arthropod group Trilobita Mandibulata Chelicerata 4. The first arthropods belong to this Arthropod group Trilobita Mandibulata Chelicerata 5. The body segment where respiration occurs Head Thorax Abdomen Send Your Results (Optional) Your Name To Email Time is Up!