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Worksheetswhere have all the creatures gone? lesson 6-7 Unit 2
Total questions: 10
Worksheet time: 5mins
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
species that enter new ecosystems and multiply, harming native species and their habitats
native species
invasive species
invader invaders
far away species
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
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
Which fish has an advantage in survival because they lay MORE eggs?
perch
sea lamprey
