Invasive Species

What is an invasive species?

• A native (naturally found) species which are added to an area. 
• A non-native (not naturally found) species added to an area. 
• A keystone species in an environment
• none of the above

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

These were released in Australia to eat cane beetles, but now they are an invasive species and number in the millions.

• dingo
• Kangaroo
• Cane toad
• Rabbits

What makes a species invasive?

• Moving to a new ecosystem and taking resources from natives

• Not having papers

• Species that can't adapt

• Plants that take up too much space

What kind of organisms can become invasive? 

• Lions, Tigers, Bears
• Plants, Animals, or Pathogens 
• Animals
• Plants

The lack of natural predators makes populations of invasive species unmanageable?

• True
• False

Species that are indigenous to an area with no human intervention

• invasive species
• native species
• all species that live in an ecosystem

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

These were released in Australia to eat cane beetles, but now they are an invasive species and number in the millions.

• dingo
• Kangaroo
• Cane toad
• Rabbits