Phylum Porifera - Download as PowerPoint by hF1I2g1

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									Phylum Porifera
     I. General Information
• Kingdom : Animalia
• Phylum : Porifera
• Porifera = “pore bearer”

Yellow barrel sponge




                         Pink lumpy sponge
      I. General Information
Size range –
    1 cm     to
2 meters in diameter




                       Giant Barrel sponges
      II. Body Structure
A. Ostia – pores – many, water IN
B. Oscula – large opening(s), one or few,
   water OUT




                                  osculum
        II. Body Structure
C. Choanocytes –
   collar cells;
   have flagella

D. Amoebocytes –
   transport food
   to layer of cells
   not on the
   surface
   II. Body Structure
  E. Spicules –
  “skeleton” hard
    splinter-like;
  made of calcium
    carbonate
    (CaCO3)
     or silica (Si)

F. Spongin –
   flexible protein
 III. Level of organization

A. Cellular
B. Eukaryotic
C. No tissues




                Japanese Deep Sea Sponge
         IV. Symmetry
A. Some asymetrical

B. Some radial
           V. Habitat
Aquatic -
    A. Marine
      and
B. Fresh-water


                           Purple Rope sponge




                 Fresh-water Sponge
                VI. Feeding
•   Heterotrophic
•   Filter feeders
•   Food trapped
    by choanocytes
•   Intracellular
    digestion
    (within the
    cell)
•   No digestive
    tract
            VI. Feeding
–   Water & food goes in via ostia
–   Choanocytes trap food in spongocoel
–   Amoebocytes carry food to inner layer of
    cells
–   Water out osculum
         VII. Respiration
- via diffusion
   VIII. Internal transport
• via diffusion
             IX. Response

• NONE !
• No Nervous
     System
• No
 cephalization


    Pipe organ sponge
                X. Locomotion
=
    movement
    or motility
    Larvae
    Free-
    swimming,
    use cilia
    Adults
    Sessile
    (do NOT
    move)
XI. Reproduction
            1. Asexual
            a. budding

            b. gemmules
                formed in
                stress
                conditions
         XI. Reproduction
     2. Sexual
     a. Most monoecious =
•   both sexes in same organism
    (hermaphrodites)
•   egg & sperm produced
•   cross fertilization
•   egg + sperm => free-swimming
    larvae
      XI. Reproduction
2. Sexual
 b. Some dioecious
• Separate sexes
• Egg OR sperm produced




         Sponge releasing sperm
      XII. Ecological Roles

A. Habitat for other
    aquatic animals




                B. Food for some
    XII. Ecological Roles
C. Home use:
   bathing,
  cleaning,
  home improvement,
  other
    XII. Ecological Roles
D. Medical research
Sponges do not get cancer
Why not?
Maybe we can use what keeps them
   from getting cancer to treat
   humans………..
Azure Vase Sponge
Giant Barrel Sponge
White Cryptic Sponge
Elephant Ear Sponge
Stove pipe sponge
Yellow Vase Sponges
Yellow Barrel Sponge
Red Branch Sponge
How deep
would the
oceans be
 if there
 were no
sponges?

								
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