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What cna porifera be equated to in laymens terms
Porifera are sponges
what types of symetry do sponges show
Radial or asymetricle
In its simplest form what do sponges resemble?
A Hollow tube with one end of it closed
What is the hollow tube of a sponge called?
spongocoel
How many layers of CELLS does the tube wall consist of
TWO layers of cells
How many layers in total does the sponges walls have
three layers
Two layers of cells
and a gelatinous layer
What is the name of the outside layer of cells of a sponge
PINACOCYTES is the outside layer of cells of a sponge
What is the innermost layer of cells called
CHOANOCYTES
Whats special about CHOANOCYTES
they are flagellated
What internal sturcture supports sponges soma
Spicules support the sponges body
What are the incurrent pores called
ostium (singular)
whats the name for the excurrent hole (usually one big one at the top)
osculum
What are the three body types of sponges
1. Asconoid
2. Syconoid
3. Leuconoid
Verbelaly descrie the key aspect of the ASCONOID body type in sponges
ASCONOID body type simply has perferations thoruhgout its three layers taht go straight into the SPONGOCOEL
What is the overall structure of the SYCONOID body type
SYCONOID body type has its OSTIA (incurrent pores) located on cilia like projects that occur from the sponges outer layer as such
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Author
Will123
ID
40127
Card Set
zoology Lab Readings
Description
Exercise 2 - Phylum Porifera- Lab readings
Updated
2010-10-06T06:04:17Z
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