Ch 33: Invertebrates - Porifera Flashcards
Name the 10 phyla of invertebrates
Porifera Cnidaria Platyhelmenthis Rotifera Ectoprocts Brachipods Mollusca Nematoda Arthropoda Echinodermata
Porifera are parazoa meaning…
they have no true tissue
Porifera are assymetrica meaning
they are not semetrical
Porifera have what kind of larva and what kind of adults
free swimming larva and sessile adults
Porifera are what kind of feeders?
Suspension feeders
What are Suspension feeders?
feeders that capture food particles through passing through their bodies
How do porifera reproduce?
asexually (budding) and sexually
porifera body: spongocoel
central cavity
porifera body: Ostia
small pore where water flows in
porifera body: Osculum
large opening where water floes out
porifera body: Choanocytes
Specialized cells that engulf food through phagocytosis
porifera body: Ambeocytes
Cells that can transport nutrients or can morph into any cell needed
porifera Asexual reproduction: Fragmintation
– a fragment of the parent breaks off and forms a new sponge.
porifera Asexual reproduction: Budding
a new organism develops from an outgrowth due to cell division at one particular site
porifera Asexual reproduction: gemules
– a mass of cells or “pod” that can develop into a new individual.
