Alligator
As we have learned increased biodiversity makes ecosystems more resilient to change. Which of the following is a benefit of high biodiversity?
1) improves functioning of ecosystem services
2)i ncreases food security for community members
3) allows the ecosystem to withstand environmental changes
4) all of the above
4) all of the above
Healthy ecosystems benefit humans by purifying water, storing carbon and regulating pests. What are these benefits called?
Ecosystem services
Are humans the only cause of species level extiction?
no. it is natural. Species go extinct for a variety of reasons.
Which of the following explains the different beak shapes of darwin's finches?
1) The islands had different food supply on them and this selected for different beak shapes
2) each species descended from a different ancestor
3) The common ancestor of the finch had all four beak shapes
1) The islands had different food supply on them and this selected for different beak shapes
Alligators are what kind of species?
Keystone!!
Which of the following would benefit the endangered Florida panther?
1) hunting the panther
2) killing the main food for the panther
3) capturing panther kittens and safely raising them to adulthood prior to release
3) capturing panther kittens and safely raising them to adulthood prior to release
Which population would be more vulnerable to extinction?
1) In a stable environment
2) in an unstable environment
2) in an unstable environment
Which of the following is the most "fit"?
a) Mouse that has 12 babies every 30 days
b) mouse that has 5 babies every 45 days
c) mouse that has 10 babies every 60 days
a) Mouse that has 12 babies every 30 days
Which of the three types of biodiversity increases the chance that an individual will possess favorable traits needed to survive?
1) Species
2) Genetic
3) ecosystem
2) genetic
For natural selection to happen which of the following needs to be true:
1) More than 50% of offspring must survive
2) Some of the species need to be more likely to survive and reproduce
3) There must be an unlimited food supply
4) There must be no predators.
2) Some of the species need to be more likely to survive and reproduce
A scientist thinks that if a population of goats was stranded on an island some of their traits would be selected for over others. What would have to be true for this to happen?
1) Certain traits help the goats survive and reproduce
2) Certain traits let them hear more sounds
3) The island doesn't have any goat predators on it
1) Certain traits help the goats survive and reproduce
Rabbits have different fur colors and this can help camouflage/hide them from predators. Given this information, what do you think would happen to a rabbit with a new fur mutation that caused it to stick out in the environment?
It would be predated quickly and not reproduce.
Which of the following increases biodiversity?
1) Invasive species
2) Urbanization
3) drainage of wetlands
4) prescribed fire
4) prescribed fire
What is a determining factor of fitness?
Most genes passed on, so most offspring.
What happened to native fish populations after the introduction of the invasive lionfish?
Native fish species showed a reduced population due to competition with lionfish.
1) There is little struggle to survive for the species
2) Limited population size
3) Random mating
2) Limited population size
An invasive insect introduced on an island is likely to have which effect?
1) It will mutate and naturalize which increases biodiversity
2) It will eat plants and they will do extinct and that will increase biodiversity
3) Native plant species will be eaten by the insect, disappear, and decrease biodiversity.
3) Native plant species will be eaten by the insect, disappear, and decrease biodiversity.
You run a simulation on beetles and start with three colors. During the simulation a fourth color arises. What happened?
1) The fitness of the beetles changed
2) A new adaptation for the beetles appeared during the simulation
3) One of the colors disappeared and the computer put in a new color
2) A new adaptation for the beetles appeared during the simulation
A population of rabbits has three fur colors: gray, white, and brown. A scientist tracks the changes in proportion of each fur color and notes that suddenly the white rabbit fur color is becoming less common. Why might that have happened?
1) New predator tends to hunt white rabbits
2) Random selection
3) Neighborhood plants can support lots of rabbits
1) New predator tends to hunt white rabbits
Which population would be more likely to go extinct?
1) Few genetic variations
2) Many genetic variations
1) Few genetic variations
Name a condition of natural selection
More born than can survive
Traits of more fit individuals passed on
All individuals are not the same
There is a variation in fitness
Can a native species be invasive in the system it evolved in?
No. Occasionally become opportunistic. Invasive species decrease biodiversity!
Why is wildlife in the Florida Everglades less expansive than it once was?
a) Climate change diverts water from the Everglades and starves animals
b) Humans developed land and forced animals into smaller portions of land and invasive species.
c) Humans have not impacted the Everglades.
b) Humans developed land and forced animals into smaller portions of land and invasive species
Which of the following might allow an insect to become resistant to pesticides?
1) Pesticide is only effective at certain times of year
2) Plants neutralize the pesticide before it reaches the insects
3) Natural variations in the insect allow some individuals to survive and reproduce after pesticide treatment
3) Natural variations in the insect allow some individuals to survive and reproduce after pesticide treatment
What is causing the current mass extinction we are experiencing?
Humans. Pollution, habitat fragmentation, decreased land, anthropogenic climate change, etc.