Nonnative Species In Aquatic Ecosystems

Question 1

Nonnative species disrupt the natural variability of an ecosystem.

Revolt · Accepted Answer

T

Question 2

Cane toads are highly successful as an invasive species in Australia because there is only one species that is believed to be able to prey on them.

Revolt · Accepted Answer

T

Question 3

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 4

All nonnative species in an ecosystem are considered invasive species.

Revolt · Accepted Answer

F

Question 5

The rusty crayfish is harmful to native species of crayfish because it clear cuts the bottom of waterways leaving native species without a food supply.

Revolt · Accepted Answer

T

Question 6

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 7

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 8

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

Revolt · Accepted Answer

unintentional

Question 9

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

Revolt · Accepted Answer

F

Question 10

Nonnative species are only introduced unintentionally.

Revolt · Accepted Answer

F

Nonnative Species In Aquatic Ecosystems Answers

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