Sea Lamprey

1. Sea lampreys caused problems in the Great Lakes because they __________.

• ate water plants

• killed other fish

• drank human blood

2. Which sentence from the story supports the correct answer to question 1?

• “. . . swordfish keep their numbers down.”

• “A lamprey attack often means death.”

• “. . . thousands of people would lose their jobs.”

3. How did sea lampreys get to the Great Lakes?

• Humans brought them by mistake.

• They swam through a human-made canal.

• They just showed up and no one knows why.

5. Which invasive species on the map in “The Invaders of the United States” was brought to the U.S. by mistake?

• spotted knapweed

• mongoose

• Giant Snakes

• Wild Pigs

6. Both “Vampire of the Deep” and “The Invaders of the United States”

• tell about sea lampreys

• list different types of beneficial animals and plants

• explain the causes and effects of invasive species

7. What do mongooses and Asian carp have in common?

• Both were brought by accident.

• Both were meant to be kept as pets.

• Both were meant to control another species.