Invasive Species

How did the zebra mussels end up in the Great Lakes?

• In ballast tanks of ships
• They were intentionally released
• They have always been in the Great Lakes
• That's not a zebra mussel

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

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What is the main cause for species invading?

• Air Pollution 
• Wanting to be adventerous
• Human Means 
• Themselves

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

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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

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Which of these animals is an introduced animal to Australia?

• Rabbit
• Kangaroo
• Koala
• Platypus

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

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Why can an invasive species be bad for an ecosystem?

• They can provide too much food for the other organisms.
• They can disrupt the natural ecosystem. 
• They can fight with other animals.

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Which type of species belongs in or came from a certain ecosystem?

• native (endemic) species
• alien species
• invasive species

If a blue catfish is introduced and eats the large fish who eat the smaller fish, what will happen to the population of the smaller fish?

• Increase
• Decrease
• Stay the same
• No affect on smaller fish

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