where have all the creatures gone? lesson 6-7 Unit 2

Which external feature do fish use to filter oxygen out of the water?

• eyes

• fins

• scales

• gills

Which is the largest type of lamprey?

• Chesnutt Lamprey

• silver lamprey

• sea lamprey

• American brook lamprey

Species that normally live and thrive in a particular ecosystem

• invasive species

• home species

• native species

• far away species

Tags

NGSS.MS-LS2-4

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species that enter new ecosystems and multiply, harming native species and their habitats

• native species

• invasive species

• invader invaders

• far away species

Tags

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The sea lamprey does not have a stomach but the perch does. What might be the reason for the difference in structure

• sea lamprey eat more food

• perch have jaws that help them eat

• sea lamprey eats only blood and it does not need to be broken down

• the sea lamprey has more eggs

Tags

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Sea lampreys are what type of swimmer?

• s shaped

• half body

What are the predators of the sea lamprey when they live in the Great Lakes?

• sharks

• trout

• they have no predators in the Great Lakes

• catfish

There are several native species in the Great Lakes, they don't seem to have an impact on the trout population. Why does the sea lamprey have a greater impact than the native species

• the native species eat worms not trout

• the native species are vegetarians

• the trout can out swim the native species

• the native species of lamprey are much smaller and therefor cause less damage

Tags

NGSS.MS-LS2-4

The sea lamprey is a risk to native fish because:

• It attaches to the body and sucks the blood from the fish. 
• It eats the alage the fish need.
• It is ruining beaches.
• The lamprey causes no risk to native fish. 

Tags

NGSS.MS-LS2-1

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Which fish has an advantage in survival because they lay MORE eggs?

• perch

• sea lamprey