Vocabulary
Organisms that remain attached to one place during their lifetimes
What is sessile
true or false, sponges have organs and tissues.
false
what are the hard skeletal structures on the sponge?
spicules
over 3 meters wide
invertebrates
three
what are the outer layer of cells on a sponge called?
the covering cells
sponges can live up to 200 years but scientists speculate they can live up to be 5000 years old
What phylum do sponges belong to?
Porifera
what is the opening at the top of the sponge
osculum
water is pulled in through the pores of the sponge called what?
ostia
True or false: sponges are some of the oldest living animals on earth
true: there are fossil records dating back over 500 million years old
top opening on a sponge
osculum
Are sponges symmetrical or asymmetrical?
asymmetrical
How do sponges get their food?
they are filter feeders, get their food from organisms in the water.
how many hearts does a sea sponge have?
what do the wandering cells do in the sponge
carry food and oxygen throughout the sponge and collect waste to be released
What do the flagella do?
help move water through the sponge
how many layers of cells is the sponge made up of
2 layers
if a sponge loses up to 80% of it's mass will it be able to survive