Marine Arthropods JoElla and Jared P. 6

Jointed Appendages: appendages that are attached to body and have joints Exoskeleton: tough external skeleton Metamorphosis: transformation from immature form to adult form in 2+ stages Molt: shedding an old shell to make way for new growth Vocabulary

Description Segmented bodies Exoskeleton (tough external skeleton) Cephalization (concentration of sensory organs/having a head)  Jointed appendages Description

Symmetry Bilateral Three germ layers True coelom body cavity Segmentation Cephalization Symmetry

Feeding Filter Feeders Carnivores Herbivores Detritivores Parasites Scavengers Feeding

Open circulatory system Heart Arteries Circulation

Diffusion into water Excretion

Response Well-developed nervous system Brain Sophisticated sensory organs Response

Movement Muscles Attached internally to jointed exoskeletons This Photo by Unknown author is licensed under CC BY-SA-NC.

Marine arthropods reproduce sexually. Reproduction Marine arthropods reproduce sexually. Sexual reproduction with marine arthropods happens externally 

Respiration Marine arthropods use gills to breath under water This Photo by Unknown author is licensed under CC BY-NC-ND.

Names of classes and examples of each Arachnida- Spiders, Scorpions, and ticks(arachnids are predators)   Diplopoda- Millipedes(aren't born with all their segments) Chilopoda- Centipedes(venomous predators) Entognatha- Springtails(smaller than 6mm in size) Malacostraca- Sowbugs and Pillbugs(thrive in moist environment)  This Photo by Unknown author is licensed under CC BY-SA. This Photo by Unknown author is licensed under CC BY-NC. This Photo by Unknown author is licensed under CC BY-NC. This Photo by Unknown author is licensed under CC BY-NC-ND. This Photo by Unknown author is licensed under CC BY-NC-ND.