Phylum: Porifera
• Porifera means “pore-bearing;”
simplest animal
a.) Sessile – do not move as
adults
b.) filter-feeders
c.) few tissues & no true organs
d.) has an osculum – large
opening at the top
e.) hermaphrodites, but they are
Phylum: Porifera
“Sponges”
CHARACTERISTICS:
Body Temp - Ectotherm
Symmetry - Asymmetrical
Digestive System – None
Skeletal System – Spicules
Circulatory System – None
Reproductive System –
Sexual & Asexual
only one gender at a time
Phylum: CNIDARIA
hydra
Examples: hydra, jellyfish, coral,
sea anemone, sea fan, sea pansies
Description:
a.) have tentacles
b.) have nematocysts – stinging cells (can also help capture
food & attach to surfaces)
c.) 2 body forms: medusa (mobile)
& polyp (sessile)
d.) omnivorous filter feeders
Phylum:
CNIDARIA
CHARACTERISTICS:
Body Temp - Ectothermic
Symmetry - Radial
Digestive System – Incomplete
Skeletal System – Calcium
Carbonate or Chitin
Circulatory System – None
Reproductive System Hermaphrodite or Asexual
Sea
anemone
jellyfish
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