How much do you know about invasive species? Take our quiz and find out. Click on the answer which you think is correct.
Which of the following invasive species disrupts power plants by the Great Lakes?
Zebra mussel | Correct
Burmese python | Incorrect
Brushtail possum | Incorrect
Sudden oak death | Incorrect
Invasive species have many harmful effects. Which of the following impacts does buffelgrass have in the Sonoran Desert of Arizona?
It increases how frequently wildfires sweep through lands | Correct
It transforms biologically rich savannahs into dense, shaded forests with little biodiversity | Incorrect
It strangles other plants | Incorrect
It produces compounds that poisons other plants | Incorrect
Invasive species arrive through different routes. How does water hyacinth most frequently invade?
It arrives in ballast water from ships | Incorrect
It becomes attached to cars, trucks, and heavy machinery | Incorrect
It is shipped by the horticulture trade | Correct
Its seeds are eaten and carried by feral pigs | Incorrect
What percentage of endangered or threatened species in the United States are at risk from invasive species?
8 percent | Incorrect
42 percent | Correct
50 percent | Incorrect
1 percent | Incorrect
Which native American species is invasive in New Zealand and Australia?
Hellbender | Incorrect
American bison | Incorrect
Ivory billed woodpecker | Incorrect
Monterey pine | Correct
Which of the following is not a management method that is used to fight invasive plants?
Manually pulling them | Incorrect
Prescribed fire | Incorrect
Building fences | Correct
Herbicides | Incorrect
The American chestnut was once a dominant tree in eastern North America. When did it become essentially extinct in the wild because of the non-native chestnut blight?
200 BC | Incorrect
1492 AD | Incorrect
Around the 1930-1950s | Correct
2005 | Incorrect
Determining the costs from invasive species is notoriously difficult. What is the annual cost to the USA, estimated by scientists in 2004?
$100 million | Incorrect
$100 billion | Incorrect
$120 billion | Correct
$500 billion | Incorrect
What is most cost effective way to deal with the effects from invasive species?
Prevent invasions before they even occur | Correct
Detect invasive species shortly after they have created infestations | Incorrect
Study the problem for a few more years | Incorrect
Try to eradicate the most widespread invaders | Incorrect
How can you prevent the spread of invasive species when hiking?
Always carry pesticide | Incorrect
Clean your boots thoroughly before you hike in a new area | Correct
Wear soft soled shoes | Incorrect
Avoid hiking alone | Incorrect