Invasive Species

A species that is NOT native to a particular region is called

• natural
• invasive
• endemic
• extraordinary

When taken to a new habitat, non-native plants often threaten native plants of the new habitat.  Why do they do this?

• Non-native plants are able to mutate rapidly
• Non-native  plants cause native animals to relocate
• Non-native plants are able to be used for medicine
• Non-native plants compete with native plants for resources

What effect will an invasive species have on the carrying capacity of an ecosystem?

• The carrying capacity will increase
• The carrying capacity for everyone will decrease
• The carrying capacity will only decrease for those in competition for same resource
• The carrying capacity for all animals will stay the same

Kudzu has overgrown many parts of southern Missouri and native ground plants have disappeared from the area. This is an example of:

• Parasitism between kudzu and the native plants
• A predator prey relationship between ground plants and kudzu
• Competition occurring between the native and invasive species
• Commesalism occurring between the kudzo and native plants

Which of the following is not a characteristic of Invasive plants?

• Lots of seeds
• effective dispersal methods
• Easily established
• Smells pretty

How do invasive plants damage the environment?

• Compete with native species
• Change plant community
• Alter diversity
• All of these

A ______ plant species is one that occurs in area without human action.

• Invasive
• Native
• Weed
• Non-Native

Exotic or invasive species leads to all of these problems except

• increased biodiversity
• loss of biodiversity
• disease
• loss of native species

Why are invasive species a threat to biodiversity?

• They compete with natives.
• They are a new species.
• They can't survive in their new habitat.

What is an invasive species?

• Comes from another ecosystem
• Belongs here in Texas
• It helps increase biodiversity