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Envirothon 2
Freshwater Filters
13
Environmental Studies
6th Grade
01/03/2011

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Cards

Term
Describe a freshwater mussel's body.
Definition
Simple, two hard shells covering a soft body, pair of gills, strong foot.
Term
What are siphons?
Definition
Tubes that are used in filtering water.
Term
How many siphons do freshwater mussels have?
Definition
2
Term
What are freshwater mussel's feet used for?
Definition
To burrow into the bottom of a lake or river. They're also use as anchors.
Term
How do filter feeders clean water?
Definition
They inhale water through the bottom siphon. As the water moves though, particles (such as algae) get sucked in. This be used for nutrients. The clean water then exited though the top siphon.
Term
How many freshwater mussel species are in Pennsylvania?
Definition
42
Term
What are the 2 problems facing freshwater mussel?
Definition
Soil settling and zebra mussels.
Term
How does settling soil cause problems for freshwater mussels?
Definition
It smuohers them on the bottom of the lake or river.
Term
How do zebra mussels cause problems for freshwater mussels?
Definition
They attach themselves to freshwater mussels back, and filter all of the nutrients needed for the freshwater mussel to survive.
Term
What do scientist still want to know about freshwater mussels?
Definition
What they do and how they do it. Also, how many freshwater mussels are in Pennsylvania.
Term
What should you contact if you find a freshwater mussel in Pennsylvania?
Definition
Contact the PLAY Tackle Box.
Term
What do new born freshwater mussels do after they are born?
Definition
Attach themselves to certain fish and let go when they find a good place to let go. Then, the burrow to the bottom to grow and become adults.
Term
How old do freshwater mussels usually live to be?
Definition
15-100 years
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