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Test for Species
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Answer the 10 questions below before proceeding further. Your score  (10 percent for each correct answer) can be checked at any time at the bottom of the page.
Record how you do so that at the end of the lab you can be amazed by how much you have learned.

1. What is the main product or service that honey bees provide for humans?
Make honey
Make beeswax
Pollinate plants
Provide food for birds

2. Why were European starlings introduced to North America?
Because they were mentioned in one of Shakespeare’s plays
Because they have beautiful songs
By accident
Because they are good to eat

3. How did potato plants get to North America?
They were brought from South America by Native Americans
They were taken from South America to Europe and then to America by settlers
They were brought from their native Ireland to the U.S. by immigrants
They were brought from Africa to North America with the slave trade

4. A biological control option for leafy spurge is
Chemical sprays like Round-Up
Grazing by grasshoppers
Grazing by goats
Mowing

5. Which species was introduced almost exclusively for the purpose of human medicine making?
Dandelion
Purple loosestrife
Leafy spurge
Pussy willow

6. When species are introduced outside their home range, which of the following ecological conditions can make them problems?
They can’t live in the new area
They have narrow niche requirements
They leave behind their natural enemies
They become symbiotic

7. Leafy spurge is able to aggressively invade rangeland habitats because:
It has milky sap that poisons animals.
It grows during the winter.
It is capable of reproducing by root buds as well as from seeds.
It has seeds that hitchhike to new areas on animal fur.

8. Which agriculturally important species originated in the “fertile crescent” region of the Middle East?
Corn
Cow
Wheat
Honey bees

9. What is the ancestral species that gave rise to modern corn?
popcorn
teosinte
wheat
jointed goatgrass

10. What is the total economic impact of exotic species on the U.S. economy?
$144 million per year
$1.8 billion per year
$122 billion per year
$36 billion per year


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