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ROTIFERS AND MOLLUSCA

ROTIFERS AND MOLLUSCA. A TALE OF MAJESTIC INVERTEBRATES. ROTIFERS. COMMON NAME. WHEEL ANIMALS. EXAMPLES. BRACHIONUS PLICATILIS B. CALYCIFLORUS LECANE BULLA. SYMMETRY . BILATERAL. TISSUE COMPLEXITY. EUMETAZOA. GERM LAYERS. 3. GUT OPENINGS. 2. COELEM. PSUDOCOEL.

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ROTIFERS AND MOLLUSCA

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  1. ROTIFERS AND MOLLUSCA A TALE OF MAJESTIC INVERTEBRATES

  2. ROTIFERS

  3. COMMON NAME WHEEL ANIMALS

  4. EXAMPLES BRACHIONUS PLICATILIS B. CALYCIFLORUS LECANE BULLA

  5. SYMMETRY BILATERAL

  6. TISSUE COMPLEXITY EUMETAZOA

  7. GERM LAYERS 3

  8. GUT OPENINGS 2

  9. COELEM PSUDOCOEL

  10. EMBRYONIC DEVELOPMENT PROTISOMES

  11. FEEDING/ DIGESTION FEMALES: COMPLETE MALES: GASTROVASCULAR CAVITY

  12. RESPIRATION DIFFUSION

  13. CIRCULATION DIFFUSION

  14. EXCRETION PROTONEPHRIDIA

  15. RESPONSE SMALL BRAIN NERVE NETWORK

  16. MOVEMENT SESSILE PLANKTONIC

  17. REPRODUCTION SEXUALLY PARTHOGENICALLY

  18. FERTILIZATION INTERNAL

  19. OTHER UNIQUE CHARACTERISTICS CILIATED CORONA

  20. THE PROCESS OF EVOLUTION DRIVES THE DIVERSITY AND UNITY OF LIFE • ROTIFERS HAVE EVOLVED FROM FLATWORMS, WHICH IS EVIDENT THROUGH THEIR SHARING OF FLAME CELLS, PHARYNX, AND NUMEROUS CILIA. • THEY ARE DIFFERENT BECAUSE OF THEIR LACK OF CIRCULATORY AND RESPIRATORY ORGANS, AS WELL AS THE PRESENCE OF A ROTARY ORGAN ON ITS HEAD.

  21. BIOLOGICAL SYSTEMS UTILIZE FREE ENERGY AND MOLECULAR BUILDING BLOCKS TO GROW, REPRODUCE, AND MAINTAIN DYNAMIC HOMEOSTASIS Ring of cilia allows for more efficient resource-gathering One type of Rotifer produces fertilized “resting eggs” which can resist drought for long periods of time Another type can contract into an inert form and lose almost all body water, and can remain in this state for years Absence of cell division allows Rotifers to resist radiation

  22. LIVING SYSTEMS STORE, RETRIEVE, TRANSMIT, AND RESPOND TO INFORMATION ESSENTAIL TO LIFE PROCESSES INNATE BEHAVIOR: The male mating reaction of rotating around the female is an innate reflex response. It is triggered the coronal chemoreceptors making contact with a sudden increase in a species-specific chemical found only in females of the species. LEARNED BEHAVIOR: None found COOPERATIVE BEHAVIOR: See innate example

  23. BIOLOGICAL SYSTEMS INTERACT, AND THESE SYSTEMS AND THEIR INTERACTIONS POSSESS COMPLEX PROPERTIES Major food source for many species Help to decompose organic matter in soil Help with sewage treatment

  24. MOLLUSCA

  25. COMMON NAME MOLLUSKS

  26. EXAMPLES SQUID OCTOPI SNAILS SLUGS MUSSELS CLAMS OYSTERS SCALLOPS

  27. SYMMETRY BILATERAL

  28. TISSUE COMPLEXITY EUMETAZOA

  29. GERM LAYERS

  30. GUT OPENINGS 2

  31. COELEM COELEMATES

  32. EMBRYONIC DEVELOPMENT PROTOSTOME

  33. FEEDING/ DIGESTION EXTRACELLULAR/ COMPLETE

  34. RESPIRATION BRANCHIAL TERRESTRIAL: LUNGS

  35. CIRCULATION CEPHALAPODS HAVE CLOSED EVERYONE ELSE: OPEN

  36. EXCRETION NEPHRIDIA SYSTEM

  37. RESPONSE 2 NERVE CORDS EYES SENSOR-CONTAINING TENTACLES

  38. MOVEMENT FOOT

  39. REPRODUCTION SEXUAL

  40. FERTILIZATION BOTH INTERNAL AND EXTERNAL

  41. OTHER UNIQUE CHARACTERISTICS MANTLE CAVITY WITH SHELL

  42. BIG IDEA 1 Molluscs share distant common ancestors with annelid worms: suggested by their larval from Molluscs most likely evolved from free-living flatworms: both are tripoblastic, bilaterally symmetric, and cephalized. But molluscs have developed an internal body cavity enclosed by membranes

  43. BIG IDEA 2 Adaptations include the radula of the moons snail used to drill through other shells to get their food Jet propulsion movement and ink cephalopods If there is a drought, bivalves can survive exposure in an air environment Pulmonatesuse ammonia as a vehicle to excrete all their waste

  44. BIG IDEA 3 Self-defense behaviors Little parental care Little social interaction

  45. BIG IDEA 4 The shells of mollusks are substrate for attachment of epibionts: provide refuges from predation. Mollusks provide food for small mammals and birds. They recycle forest nutrients, and plant and animal waste Mollusks change their waste to the less toxic compound, urea, to facilitate their survival on land.

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