Phylum Porifera
The Sponges
Porifera•Pori= “Pore”
•Fera=
“Bearer”
Body of Pores
Porifera Movement
• Larva stage is
motile (able to
move)- flagellum
• Adults are sessile
(attached)
Porifera Support
• Spicules- hard mineral
•
structures intertwined
throughout the body
Spongin- tough,
protein-like fibers
Porifera Protection
• Spicules- spiny
(deter predators)
• Bad taste- produce
chemicals
Porifera Nutrition
• Feeding by
flagellated collar cells
• Amebocytes digest
particles of food
• Filter feeders- straining
food particles from
water (teacup size
sponge can remove
food from 5,000 liters
of water per day about
a truckload of quart
bottles)
Porifera Respiration
• No Structure
• Gas exchange by diffusion
Porifera Circulation
•Water in
through
incurrent pore
•Water exits
through
excurrent pore
or osculum
Porifera Excretion
• No structures
• Amebocyte cells
transport wastes
to sponge’s
surface for
removal
Porifera Reproduction
• Sexual
• Asexualregeneration,
budding
Phylum Cnidaria
• Anemones, Corals, Jellyfish, Hydras,
Movement-Tentacles
Support-Two Layers w/ jellylike
material between
Protection- Nematocystsstinging cells in tentacles
Box Jellyfish
Among the most deadly venoms in the world
Nutrition-tentacles catch and
gastrovascular cavity digests