Quizlet Honors Bio A

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  1. a diverse molluscs body plan consists of: foot, visceral mass, mantle, radula, circulatory system
  2. Antigen: a protein on the surface of bacteria that the body recognizes so it can later remember it
  3. arthropoda: jointed appendages, hard exoskeleton, head, thorax, abdomen, open circulatory system
  4. bivalves: shells divided into 2 halves hinged together, mantle cavity with gills
  5. cephalopods: shell can be small/missing/internal, and mouth is at base of foot, and radula
  6. chelicerates/arachnids: scorpions, ticks, spiders, insects, mites
  7. Cnidaria: radial symmetry + 2 tissue layers
  8. crustaceans: aquatic, lobsters, crayfish, crabs, shrimps, barnacles, krill...
  9. echinodermata: sea stars, sand dollars, slow moving, sessile marine animals, water vascular system
  10. foot: muscular, functions in locomotion
  11. gastropods: belly foot, single spiraled shell
  12. gastropods, bivalves, and cephalopods are all: the major classes of molluscs
  13. gastrovacular cavity: digestive compartment where waste exits the mouth
  14. Insects: 3 part body- head, thorax, abdomen, has a pair of antennae, 3 pairs of legs
  15. mantle: fold of tissue that drapes over the visceral mass like a shell
  16. medusa: umbrella shape, fringe of tentacles around lower edge (jelly)
  17. mollusca: snails, slugs, oysters, clams, octopuses, squids
  18. nematoda: roundworms
  19. platyhelminthes: flatworms w/ a gastrovacular cavity
  20. polyp: cylindrical body w/ tentacles projecting from one end
  21. radula: unique rasping organ that scrapes food
  22. sessile: anchored in place and cannot escape predators
  23. spiders have 8 legs and therefore:: they are NOT INSECTS....insects have 6 legs
  24. visceral mass: contains most of the internal organs