BSC 3052 FINAL UPDATED ACTUAL QUESTIONS AND
CORRECT ANSWERS
Question:
1. What is an invasive species?
Answer:
A non-native species that spreads rapidly and causes ecological or economic
harm.
Question:
2. What does the '10s rule' suggest?
Answer:
Only ~10% of introduced species establish, and ~10% of those become invasive.
Question:
3. European starlings failed to establish in the U.S. until
which attempt?
Answer:
The 8+ introduction attempt.
Question:
4. What is Minimum Viable Population (MVP)?
Answer:
The smallest population size needed to survive long-term.
Question:
5. Why do some invasive species thrive once they arrive?
Answer:
They escape predators, exploit empty niches, or possess novel traits.
Question:
6. What does the empty niche hypothesis state?
Answer:
Invasives succeed when they utilize resources native species are not using.
Question:
7. Environments with low native diversity are typically...
Answer:
More vulnerable to invasion.
, Question:
8. What does the biotic resistance hypothesis say?
Answer:
High native biodiversity reduces invasion success.
Question:
9. What is an example of biotic resistance?
Answer:
Native pathogens preventing new plants from establishing.
Question:
10. What is the novel weapons hypothesis?
Answer:
An invasive species uses chemical or biological traits that natives can't tolerate.
Question:
11. Why do Burmese pythons thrive in Florida?
Answer:
There are no native large constrictor snakes (predator release).
Question:
12. A species becomes invasive partly because in its new
range it lacks...
Answer:
Predators, herbivores, or diseases that controlled it at home.
Question:
13. What is biological control (biocontrol)?
Answer:
Using predators or pathogens to control an invasive species.
Question:
14. Why did the cane toad fail as biocontrol in Australia?
Answer:
It didn't eat the pests; it harmed native species and poisoned predators.
Question:
15. What was the air potato beetle introduced to Florida to
control?
Answer:
Air potato vine.
CORRECT ANSWERS
Question:
1. What is an invasive species?
Answer:
A non-native species that spreads rapidly and causes ecological or economic
harm.
Question:
2. What does the '10s rule' suggest?
Answer:
Only ~10% of introduced species establish, and ~10% of those become invasive.
Question:
3. European starlings failed to establish in the U.S. until
which attempt?
Answer:
The 8+ introduction attempt.
Question:
4. What is Minimum Viable Population (MVP)?
Answer:
The smallest population size needed to survive long-term.
Question:
5. Why do some invasive species thrive once they arrive?
Answer:
They escape predators, exploit empty niches, or possess novel traits.
Question:
6. What does the empty niche hypothesis state?
Answer:
Invasives succeed when they utilize resources native species are not using.
Question:
7. Environments with low native diversity are typically...
Answer:
More vulnerable to invasion.
, Question:
8. What does the biotic resistance hypothesis say?
Answer:
High native biodiversity reduces invasion success.
Question:
9. What is an example of biotic resistance?
Answer:
Native pathogens preventing new plants from establishing.
Question:
10. What is the novel weapons hypothesis?
Answer:
An invasive species uses chemical or biological traits that natives can't tolerate.
Question:
11. Why do Burmese pythons thrive in Florida?
Answer:
There are no native large constrictor snakes (predator release).
Question:
12. A species becomes invasive partly because in its new
range it lacks...
Answer:
Predators, herbivores, or diseases that controlled it at home.
Question:
13. What is biological control (biocontrol)?
Answer:
Using predators or pathogens to control an invasive species.
Question:
14. Why did the cane toad fail as biocontrol in Australia?
Answer:
It didn't eat the pests; it harmed native species and poisoned predators.
Question:
15. What was the air potato beetle introduced to Florida to
control?
Answer:
Air potato vine.
