Origin and Distribution

To which continent/country is hydrilla native?
  A. Australia.
  B. Africa.
  C. Asia.
  D. India.
  E. None of the above.
  F. All of the above.

Transportation

Which state was the first to be invaded by hydrilla?
  A. Alabama.
  B. Mississippi.
  C. Louisiana.
  D. Florida.
  E. Texas.

Environmental Impact

Hydrilla can out-compete native plants and prevent them from getting the oxygen and light they need.
  True
  False

Economic Impact

What recreational activities are interrupted by hydrilla?
  A. boating.
  B. waterskiing.
  C. fishing.
  D. swimming.
  E. All of the above.

Control

One of the best ways to control hydrilla is to:
  A. chop up and leave the pieces in the water.
  B. put more water into the lakes to drown it out.
  C. remove all pieces from boats and trailers when leaving the water to prevent spread.
  D. release chemicals into the water to kill the plants.
  E. None of the above.