Invasive Species: Mastery Test

What kind of species can harm an ecosystem or human health when introduced into the new environment?

A species whose introduction does or is likely to cause economic or environmental harm or harm to human health is a(n) ________________ species.

• endangered

• invasive

• exotic

Invasive species are ___________________

to the new environment.

• native

• local

• non-native

Which fungus affects the American chestnut?

_______________ fungus affects the American chestnut.

Type the correct answer in the box. Spell all words correctly.

Certain species of insects introduced accidentally in a forest are destroying all the Douglas fir trees in that forest. The wood of these trees is extensively used for construction. In order to control the damage caused by these insects, the forestry department decided to introduce the moth caterpillar in the forest. These caterpillars are natural predators of the insects. Which method did the forestry department implement to control the invasive species?

The forestry department implemented a(n) __________________ control method.

Match the invasive species to its benefits.

provides shelter for native species

• African tulip

• tamarisk tree

• Himalayan blackberry

Match the invasive species to its benefits.

provides food for native species

• African tulip

• tamarisk tree

• Himalayan blackberry

Match the invasive species to its benefits.

restores degraded land

• African tulip

• tamarisk tree

• Himalayan blackberry

Which method involves controlling an invasive species by removing plants from their roots?

• smothering

• digging

• mulching

• mowing

The introduction of Asian carp to the United States is an example of which type of pathway for invasive species?

• unintentional release

• accidental escape

• intentional release

• accidental transport

Rainbow trout is non-native to the United States. However, this species is breeding with the native Gila trout. Scientists recently observed that the Gila trout were becoming extinct.

What is the cause of their extinction?

• climate change

• disease

• preying

• hybridization