Marine Biology: Phylum Porifera

28 terms by bdrury 

Create a new folder

Advertisement Upgrade to remove ads

What are characteristics all animals share?

1. multicellular 2. eukaryotic - lack cell walls 3. heterotrophic 4. ability to actively move

Invertebrate

animal with no vertebrate column

Porifera characteristics

no true tissues; cannot move (sessile); asymmetric

sessile

animals that are permanently attached to a solid surface

What trait separate sponges from other phyla?

they have no true tissues

ostia

pores through which water circulates

tissue

group of similar cells that work together to perform a specific function

spongocoel

cavity which water fills

osculum

water exits through this opening after flowing through sponocoel

choanocyte

cell with flagellum (collar cell)

pinococytes

layer of cells functioning as outer covering of sponge

archaeocytes

cells resembling amoebas, that move through body of the sponge; responsible for repair and regeneration; transport food and other materials

spicules

skeletal elements that give support to the sponge's body; composed of calcium carbonate, silica, or protein called spongin

spongin

protein forms flexible fibers

asconoid

simplest form of a sponge; tubular and small; increased growth, sponocoel increases - bigger = not enough collar cells to move sufficient amount of water because no increase in surface area

Filter Feeder

organism that filters its food from the water

budding

form of asexual reproduction in which the unequal division of the adult produces two individuals

hermaphrodite

an animal that posses both male and female sex organs

syconoid

first stages of body-wall folding; internal pockets lined with collar cells

leuconoid

highest degree of body-wall folding; many chambers lined with collar cells; multiple oscula

suspension feeders

animals that feed on organisms suspended in seawater

how do sponges get nutrients?

filter feeders and suspension feeders; rely on the flow of H2O through choanocyte collar cells

How do sponges reproduce?

See page 195

What ecological roles do sponges play?

recycling of Ca; can create toxins to kill corals because of competition for space; produce chemicals that deter grazing; hosts to organisms (mutualism, commensalism)

what is size determined by?

the ability to circulate water

porocyte

water comes in through this opening

Bernoulli's Principle

faster moving = less pressure; allows planes to fly; see diagram in notebook; ergo: sponges usually found in areas of high current because the water is then forced up through the sponge

reliance for H2O flow

1. Bernoulli's Principle 2. Beating of flagella by collar cells

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set