Zoology test #2

  1. What eats other organisms and doesn't make there own food?
  2. What feeds by straining tiny plants and animals from H2O
    Filter Feeder
  3. What feeds on bits of decaying plants and animals
    Detritus Feeders
  4. What is metazoans?
    Multicellular animals
  5. What is the advantage of being multicellular?
    Specialized cells, size is bigger
  6. What cells are uniquely modified to do specific job
    Cellular Specialization
  7. What is intradependency?
    when cells make them more dependent on each other
  8. What are the three grades of organisms in kingdom animalia
    • Mesozoa
    • Parazoa
    • Eumetazoa
  9. What are the characteristics of Phylum Mesozoa
    • minute, ciliated, wormlike animals
    • only consists of 20-30 cells
    • all live in parasites in marine invertebrates
  10. What are the classes of Phylum Mesozoa
    • Rhombozoa
    • Orthonectids
  11. Where are Rhombozoa's found?
    In kidneys of deep water molliks, (octupus, squid)
  12. Where are Orthonectid's found?
    It is a parasite of invertebrates like brittle stars, bivalbe mollusks
  13. What life cycles are consisted with Phylum Mesozoa
    • sexual and asexual stages
    • asexual: consists of a multinucleated mass called plasmodium which gives rise to males and females (after divison)
  14. How are the Mesozoans significant in the phylogeny of the animal kingdom
    The transition
  15. What are the charactistics of Phylum Placozoa
    • Contains a single species
    • have a platelike body, asymmetry
    • very small
  16. What is the body plan of Phylum Placozoa
    • dorsla epithelim of cover cells and shiny spheres
    • thick ventral epithelim
  17. How do the Phylum Placozoa aquire food
    • Glides over prey
    • Rains digestive enzymes
    • Absorbs whats left
  18. What is Phylum Porifera
  19. What are the charactistics of Phylum Porifera
    • They are asymmetrical
    • live in marine water
    • they don't move and sessile as adults
  20. What is the key evolutionary advancement of sponges
    Size, they are getting bigger
  21. What is the body plan of the Phylum Porifera
    • Hollow body
    • spicules
    • spongin
    • ostia
    • oscula
  22. What is the hollow body that surrouned by cells and spiclues arranged in a jellylike layer
  23. What layer that is in relation with the spongocoel
  24. What are the support system for sponges that are made with calcium carbonate or silica and collagen
  25. What give support, and composed of collagen fibers
  26. What are tiny pores for incoming water
  27. What are larger pores for the outlet of water
  28. Why are the ostia smaller than the oscula
    more surface area to take more food in and abiling to filter easier
  29. What are the type of cells dealt with sponges
    • Pinacocytes
    • Choanocytes
    • Archaeocytes
  30. What type of cell is thin, flat epithial cells that cover the exterior and some interior surfaces
  31. What type of cell is flagellated collar cells used in digestion
  32. What type of cell that moves about in the mesoglea it can phagocytize particles and recieve particles for digestion from choanocytes
  33. What archeaocyte cells that specialize to secrete structural elements?
    • Spicules
    • Collagen
    • Spongin
  34. What are the type canal systems in sponges?
    • Asconoid
    • Syconoid
    • Leuconoids
  35. Which type of canal systems is the simplest organization (tublar body) water is drawn through dermal pores into the spongocoel which is lined with choancytes
  36. Which type of canal systems is tublar body with thicker body wall containing radial canals lined with choanocytes, there is more surface area
    found in Hexactinellida and Calcarea
  37. Which type of canal systems is the most complex and permits increase in surface area
  38. How do sponges acquire food?
    they are filter feeders, water enters thro the ostia and exit thro the osculumm, then choanocytes trap and phagocytize food particles carried in the water
  39. How do sponges digest their food
  40. How do sponges reproduce?
    • Asexual: Buds&&Gemmules
    • Sexual: Monoecious
  41. What are a small group of cells produced by an adult that breaks off live independently
    Bud, type of reproduction
  42. What is a reproductive item where they go under a "dormancy" because of harash conditions
  43. What is it called when sponges regrow missing parts when damaged
  44. What does it mean to be monoecious?
    Have both male and female parts
  45. What are the classes of sponges?
    • Calcarea
    • Hexactinellida
    • Demospongiae
    • Schlerospongiae
  46. What class of sponges is made of calcium carbonate is small and mostly asconiods?
  47. What class of sponges is made of silicon, and its six-rayed spicules and deep water.(Glass Sponges)
  48. What class of sponges is made with spongin and some silicon spicules and in shallow and deep water
  49. What class of sponges is made calcium carbonate and silicon spicules and in deep water
  50. What are examples of the Phylum Cnidaria
    Jellyfish, hydra, sea Anemone, and coral
  51. What type of symmerty does Phylum Cnidaria
  52. What is the key advances of Phylum Cnidaria
    • Organized body plan
    • Have tissues
    • No mesoderm; except Sea Anemone has all three germ layers
  53. What are the general charactistics of Phylum Cnidaria's
    • Mostly marine
    • has two germ layers ECTODERM & ENDODERM
    • sessile (no movement)
  54. What are the two life forms of Phylum Cnidaria's
    • Oral
    • Aboral
  55. What life form is the region where the mouth is located
  56. What life form is the region that is opposite of the mouth
  57. What are the two body forms of the Phylum Cnidaria's
    • Polyp
    • Medusa
  58. What body form is predominatly sessile, has a tublar body with a basal disk on the aboral end?
  59. What body form that is bell shaped and free swimming
  60. What type of symmetry is arranged in fours?
  61. What exhibts two morphological types or structures, hydras show dimorphism
  62. What exhibts more than 2 types of forms
  63. What is the body plan of the Phylum Cnidarias
    • two germ layers are present
    • the mouth is the only opening surrounded by tentacles
  64. What are the stinging cless that line the tentacles
  65. What is it that the Cnidocytes contain that are spearlike stuctures?
  66. What is the "TRIGGER" called?
  67. What does the epidermis conatin?
    • epitheliomuscular cells
    • interstitial
    • gland
    • cnidocyte
    • sensory nerve cells
  68. What tissue allows the Cnidaria's to move
  69. What tissue produces cnidoblasts, sex cells, buds, nerve cells, and other cells besides the epitheliomuscualar cells
    Interstital Cells
  70. What tissue secretes the adhesive for attachment and gas bubbles for detachment
    Gland Cells
  71. What tissue is a jellylike material which separates the two cell layers
  72. What is the chemical that is released from wounds in the prey
  73. What secretes digestive enzymes that partly break down prey
    Gastrodermal Cells
  74. What takes in partially digested food completing digestion
    Lining Cells
  75. What is the hallow internal space where digestion takes place extracellular
    Gastrovascular Cavity
  76. What is the specialized cells that react to a stimuli, the stimulus travels to other cells through a serious of inteconnecting nerve cells
  77. How do the Cnidaria's reproduced
    • Budding
    • Regeneration
  78. What is a small outgrowth of epidermis and gastrodermis which develops tentacles and separates
  79. What is ability to regrow missing parts
  80. What are the classes of Cnidaria's
    • Hydrozoa
    • Anthozoa
    • Scyphozoa
    • Cubozoa
  81. What are examples of class Hydrozoa
    Hydra and Physalia
  82. What is another name for the portuguese man-of-war
  83. What is the thing that the Portuguese man-of-war to make it float called
  84. What is the
  85. What are examples of Class Anthozoa
    Flower animals

    Coral and Sea Anemones
  86. How are corals ecologically important
    • Sheltar, habitat for other animals
    • most diversty, most biomass in any environment
  87. What are the three times of coral?
    • Marginal or fringing reef
    • Barrier reef
    • Atoll
  88. What is the describtion of the fringing reef
    Parallel to the beach, not very big at all
  89. What is a describtion of the barrier reef
    Very similar to the fringing reef but it is a lot bigger and futher off the coast of the beach
  90. What is a describtion of an Atoll
    Deeper in the water, evey far out in the ocean and they form islands
  91. What does the sea anemones have
    Large Gastrovascular cavity partitioned by septa or mesenteries
  92. What are some examples of Class Scyphozoa
    • Sea Nettle
    • Jellyfish
  93. What is the body form of Class Scyohozoa
    mostly medusa, hydra only present as part of reproductive cycle
  94. What are the two types of rhopalium
    • Statocycts
    • Ocelli
  95. What is statocysts do?
    Gravity detection
  96. What is ocelli used for?
    Light and dark detection, used in shallow water
  97. What are examples of Class Cubozoa
    Cube jellyfishes
  98. What symmerty does Class Cubozoa have?
  99. What body form is connected with Class Cubozoa
Card Set
Zoology test #2
Phylums Proifera and Cnidaria