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- 1. Multiple Choice
These species contribute to the physical world around where they live. They modify, create and maintain habitats.
Flagship Species
Predators
Keystone Species
Ecosystem Engineers
- 2. Multiple Choice
A species form that supports an entire ecosystem.
Keystone Species
Herbivores
Umbrella Species
Predators
- 3. Multiple Choice
What is a keystone species?
A species that helps to hold an ecosystem together
A species that lives in or around rocks
Keys and stones have nothing to do with ecology
A keystone isn't a living thing, it's just a stone
- 4. Multiple Choice
Why are bees considered a keystone species?
The honey they make supports the bear population
They pollinate flowers that produce fruit which supports the ecosystem
They sting when threatened
They live in hives
- 5. Multiple Choice
Why are some sharks considered a keystone species?
Because they are a top predator
They scare off smaller fish that may overgraze an area of sea grass
They are tertiary consumers
They are cartilaginous
- 6. Multiple Choice
If 25 crabs were captured and marked and then released and then a few days later 10 were caught and of those 5 were marked. What would the estimate of the population be?
Lincoln Index formula:
Number of individuals originally marked (M)
Total individuals captured in 2nd sample (n)
Tagged individuals in 2nd sample (m)
Population size (N) = (M*n)/m
35
50
75
200
- 7. Multiple Choice
Conservationists want to find the population of a species of mountain goat. On one day they capture 10 goats, tag them and release. A week later they capture 8 goats, 4 of which are tagged. What would the estimate of the population be?
Lincoln Index formula:
Number of individuals originally marked (M)
Total individuals captured in 2nd sample (n)
Tagged individuals in 2nd sample (m)
Population size (N) = (M*n)/m
20
40
15
22
- 8. Multiple Choice
These species support their ecosystem through a relationship that benefits both themselves and other organisms
Flagship Species
Mutualists
Keystone Species
Ecosystem Engineers
- 9. Multiple Choice
Flying foxes are an example of a/an _____ species
Engineer
Flagship
Mutualist
Umbrella
- 10. Multiple Choice
Flagship species are selected based on
How endangered they are
Their ability to produce food for human consumption
How much they appeal to humans
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