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WorksheetsInvasive Species
Total questions: 15
Worksheet time: 24mins
Exotic or invasive species leads to all of these problems except
increased biodiversity
loss of biodiversity
disease
loss of native species
Do most introduced species become invasive?
Yes-all introduced species become invasive
Yes-nearly all introduced species become invasive
No-only 1 out of 10 actually survive, and only 1 in 100 become invasive
No-introduced species never become invasive because their adaptation are not suited for the new environment
How much estimated damage do invasive species cause in the Canada each year?
$1.7 million
$17 million
$170 million
$17 billion
When are invasive species good?
Invasive species are never good
When they aid human activity
When they help native species
When they eradicate other invasive species
Which invasive maple tree oozes a milky sap from the petiole of its leaves?
sugar maple
sycamore maple
norway maple
red maple
Which invasive tree is easily mistaken for a sumac, ash, or black walnut?
tree-of-heaven
autumn olive
common buckhorn
princess tree
This invasive species was brought to Ontario in the 1800's as a culinary herb. Its roots emit chemicals which hinder the growth of native plants.
Wild parsnip
Giant hogweed
Garlic Mustard
Purple loosestrife
This invasive species in the great lakes region has a lung-like organ which allows it to breath by gulping air at the surface and survive out of water for up to 4 days.
Brown tree snake
Snakehead
Red swamp crayfish
Zebra Mussel
What are these D-shaped holes caused from?
The spotted lanternfly laying eggs in these holes.
The exit holes from the emerald ash borer.
A woodpecker looking for the emerald ash borer beetles.
A snake looking for a home.
This ash tree's S- shaped damage is caused by which of the following insects?
HWA Hemlock Woolly Adelgid
Spotted lanternfly
Emerald ash borer
Sweat bee
You have probably seen this common invasive species in your yard or garden.
Common Buckthorn
Siberian Pea Tree
Norway Maple
Manitoba Maple
This invasive species grows very quickly however, the wood is very soft and breaks easily.
Common Buckthorn
Norway Maple
Manitoba Maple
Siberian Pea Tree
The invasive species from Asia shown here is know for:
Jumping
Swimming
Multiplying at an incredibly fast rate
Being able to survive in extremely dry habitats
In Ontario this invasive species has been found in ponds connected to the Rideau Canal near Ottawa, in the Welland Canal, Lake St. Clair and its tributaries, Bronte Creek, and beaches east of Toronto.
Water Lettuce
Yellow Floatingheart
Common Water Lily
Water Soldier
Native to Asia and Europe, this invasive species was imported to Canada in the last few years as an ornamental plant for outdoor gardens.
Water Lettuce
Common Water Lily
Floating Yellowheart
Water Soldier
