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WorksheetsInvasive Species
Total questions: 24
Worksheet time: 46mins
How did the zebra mussels end up in the Great Lakes?
In ballast tanks of ships
They were released by pet owners
They have always been in the Great Lakes
They accidentally traveled in someone's luggage
Which of the following is a main characteristic of most invasive species?
Ability to breathe in the air & in the water
Large, sharp teeth
Produce many offspring; can reproduce quickly
is always an animal
Invasive species have a negative impact on...
the ecosystem
the economy (money)
Both the ecosystem and the economy
None of these
What's one problem with the pythons preying on all the small animals in the Everglades?
other animals can't find any food
the grass can't grow as fast
the deer have nothing to eat
plants can't photosynthesize
Invasive species can have a major impact on the ecosystem.
TRUE
FALSE
Invasive species can crowd out native species.
TRUE
FALSE
What caused the lionfish to end up in the Atlantic Ocean?
The lionfish swam there from The Pacific Ocean.
Pet owners dumped their unwanted fish into the ocean.
Pet owners lost them and found them in the Atlantic Ocean.
The lionfish migrate there every winter.
It's hard to reduce lionfish numbers because _______.
they often live in spots where divers can't reach them.
they have spines that keep predators from eating them.
they reproduce quickly.
all of the above.
Invasive species cause harm to what?
Choose all that apply
economy (money)
atmosphere only
environment
health of organisms
water only
Invasive species [more than 1 answer]
take over the habitat of other organisms
increases the populations of native organisms
destroy/decrease biodiversity
improves/increases biodiversity
cause the populations of native organisms to decrease
The Nutria was intentionally introduced
to control the algae in catfish ponds
to control the cane beetle in sugar cane fields
to domesticate as a pig
to have similar wildlife as Europe
for the fur trade
How does the European starling cause harm to the ecosystems that it invades?
Choose all that apply.
it eats & damages fruit trees and bushes
it takes over nesting holes of native birds
it eats native fish out of ponds and rivers
it destroys the wood in people's homes
How do the invasive nutria harm the ecosystem?
they eat the vegetation in wetlands
they eat the native birds' eggs
they take over nests of native birds
they go into people's houses
How do animals get from their native habitat to new areas? Choose all that apply.
in the ballast area of ships
from pet owners releasing them into the wild
by traveling on the backs of other animals when they move
by wind blowing them into new areas where they don't belong
