Nonnative Species In Aquatic Ecosystems

Question 1

Which of the following is not true about nonnative species?

Revolt · Accepted Answer

They can be introduced within their natural range.

Question 2

Which of the following is not true concerning the zebra mussel in the United States?

Revolt · Accepted Answer

It can be eliminated from a river with minimal effort.

Question 3

Why does the aquarium trade contribute to the introduction of nonnative species?

Revolt · Accepted Answer

All of the above

Question 4

Hull fouling is a(n) _______ introduction of nonnative species.

Revolt · Accepted Answer

unintentional

Question 5

Which of the following is true concerning hull fouling from commercial shipping and recreational boating?

Revolt · Accepted Answer

It is difficult to prevent since ship hulls begin, conduct, and end voyages in water.

Question 6

Why has the spread of the herbicide-resistant hydrilla through Florida’s waterways resulted in them no longer being navigable by most boats?

Revolt · Accepted Answer

The weed clogs propellers that boats use for propulsion.

Question 7

Which of the following is an example of mechanical control of nonnative species?

Revolt · Accepted Answer

net barriers

Question 8

Introducing invasive species to an ecosystem results in an increase in biodiversity.

Revolt · Accepted Answer

F

Question 9

Why might it be beneficial to regulate what species of plants and animals people are allowed to own in particular environments?

Revolt · Accepted Answer

Some species might become invasive and destructive if they escaped.

Question 10

Why are cane toads in Australia considered an invasive species rather than simply nonnative?

Revolt · Accepted Answer

They are destructive to native species and have no natural predators.

Nonnative Species In Aquatic Ecosystems Answers