1. Marine Arthropods
Kumi, Kylee, Sierra

2. Symmetry bilateral symmetry Specialized cells, tissues, organs
Three germ layers
True coelom body cavity
Embryological development is protostome
Segmentation of jointed appendages
Cephalization

3. Feeding
Groups based on what they eat: shredders, predators, herbivores and fungal feeders.
Shredders eat bacteria and fungi on plants.
Predators eat other bugs.
Herbivores eat plants, particularly roots.
Fungal feeders eat fungi and bacteria.

4. Circulation Diffusion:
open circulatory system (blood is pumped by the heart and bathes the internal organs.
internal cavity is a hemocoel, (holds internal organs)
Small species often do not have any, since their high ratio of surface area to volume enables simple diffusion through the body surface to supply enough oxygen.

5. Excretion Uses ammonia to excrete waste
Ammonia is toxic so it needs to be watered down
Excreted through membrane
Flame cells remove the waste from the cell and filters it
Solid waste through the anus
Nephridia absorb useful metabolites before excretion of waste.
Metabolic waste through the malpighian tubes (helps absorb waste)

6. Response Ganglia: Specialized sensory nerve cells: Nervous system:
Adaptations: Segmented bodies, metamorphosis

7. Movement Sessile: Cilia and muscle cells:
Muscle cells(length of bodies) contract to move:
Longitudinal Muscles:
Circular Muscles:
Uses a siphon to propel themselves forward:
Covered in exoskeleton made of chitin which is staged by metamorphosis
Moulting which is shedding their exoskeleton

8. Reproduction Can produce asexually and sexually
Done externally in water
Pathogenesis occurs
Unfertilized egg develops in arthropod
design

9. Respiration Diffusion: GIlls: they usually have gills
Tracheal tubes: yes they have a trachea, made up of the three parts: head, thorax, and abdomen.
Spiracles: In ganoid fishes a pair of spiracles, derived from the gills, is used as a water passageway during respiration, the nasal opening of whales are also spiracles.

10. Phylum: Arthropoda Crustacea: Lobsters, crabs, crayfish etc...
Arachnida: Ticks, mites, scorpions, etc...
Chilopoda: Centipedes
Diplopoda: Millipedes,
Insecta: butterfly’s, beetles, dragonflies, etc..