In the activity below, read the description and decide on what word it is describing. Click the card to see the correct answer. If you feel comfortable with the information, click Remove to take that card out of the deck. If you still need to review the information, click the Next to review that item again.
cells where food and sperm get trapped
choanocytes
cells that deliver nutrients to other cells
amoebocytes
cluster of amoebocytes formed when resources are scarce
gemmule
free-swimming young sponges
larvae
describes adult sponges that are attached to a firm surface
sessile
where water enters the sponge
ostia
large openings in sponges where water and waste exit
osculum
gel-like substance that holds all sponge cells together
mesohyl
tiny needles made up of calcium carbonate or silica
spicules
flexible protein fiber found in the most common class of sponges--Demospongiae
spongin
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