Invasive species Quiz

What is the definition of native species?

• Species that are introduced to an area outside their natural range due to human activity.

• Species that naturally occur in a specific region or ecosystem without human intervention.

• Species that have been intentionally or unintentionally brought to a new area by humans.

• Species that are invasive and cause harm to the ecosystem.

Which of the following is an example of a native species in Texas?

• European starling (Sturnus vulgaris)

• House sparrow (Passer domesticus)

• Bluebonnet (Lupinus texensis)

• Zebra mussel (Dreissena polymorpha)

What is the main difference between alien species and introduced species?

• Alien species are always harmful, while introduced species are not.

• Alien species are native to the area, while introduced species are not.

• Alien species are introduced to an area outside their natural range, while introduced species are brought to a new area by humans.

• Alien species are beneficial to the ecosystem, while introduced species are not.

Which of the following circumstances is true for native species?

• They are adapted to the climate, soil, and other environmental factors of their native range.

• They are introduced intentionally for agriculture or pet trade.

• They may establish populations in a new environment but do not necessarily cause harm.

• They are always harmful to the ecosystem.

What is the definition of invasive species?

• Native species that thrive in their environment

• Non-native species that establish, spread, and cause harm to the environment, economy, or human health

• Species that are used in agriculture and aquaculture

• Species that are beneficial to ecosystems

How was the brown tree snake introduced to Guam?

• Through natural migration

• Via military cargo shipments after World War II

• By being intentionally released for pest control

• Through the pet trade

What is one of the primary ecological impacts of the brown tree snake on Guam?

• Increase in bird populations

• Decline in bird populations

• Increase in small mammal populations

• Decline in snake populations

Which of the following is an example of a plant introduced for agricultural purposes that became invasive in the southeastern United States?

• Kudzu

• Cane toad

• Zebra mussel

• European starling

What was the primary reason for introducing the cane toad to Australia in the 1930s?

• To control soil erosion

• To control sugar cane pests

• For recreational fishing

• For ornamental purposes

Which of the following is a potential risk associated with biological control methods?

• Increased soil fertility

• Enhanced ornamental value

• The control agent becoming invasive

• Improved recreational fishing