Vocabulary
Populations
Adaptations
Natural Selection
100
Members of the same population are different from one another.
Variation
100
List 3 examples of limiting factors
Food/Water, Space, Mates, Disease, Predation, Natural Disasters, Habitat Loss
100
A skunk having a distinct color/pattern is a ____________________ adaptation
Physical
100
There are 2 types of worms in a forest --- nocturnal worms and diurnal worms. The birds in the forest only eat diurnal worms. Of the 500 offspring that are born, only 100 survive until adulthood.
Which worm is natural selection, selecting for?
Nocturnal Worms
200
A physical characteristic or behavior that allows an organism to live successfully in their environment.
Adaptations
200
What is being described --- The struggle organisms go through to survive using the same limited resources?
Competition
200
Being nocturnal is a _________________________ adaptation.
Behavioral
200
How do you know a population is going through natural selection?
The 5 Points of Natural Selection
1. The population has variations
2. Some variations are favorable
3. There are more offspring born than survive
4. Those that survive, have the favorable trait
5. A population changes over time
300
Process by which organisms that are better adapted to their environment tend to survive and reproduce.
Natural Selection
300
A disease goes through a population of squirrels in Nara Park.
What is this an example of?
Limiting Factors
300
What is ONE way organisms gain their adaptations?
Mutations (A genetic change in their DNA)
300
How would you expect this population to change over time, based on your knowledge of natural selection?
Over time, there will be more brown beetles in the population
400
An environmental factor that causes a population to decrease (go down).
Limiting Factor
400
What is the carrying capacity of the deer population?
80 Deer
*I will accept if you are in the 75-80 deer range
400
In the desert, there are tan mice and black mice. What adaptation do the tan mice have?
Camouflage
400
How did the finch population on the Galapagos Islands model/show the process of Natural Selection?
The finches had variation in their beaks, the finches with beaks best adapted to their food source were able to live long enough to reproduce and pass on their favorable trait (their beak) to their offspring.
Over time, Darwin saw the population of finches change based on what food sources were available on the islands/near where the finches lived.
500
The largest population that an area can support.
Carrying Capacity
500
How are limiting factors and carrying capacity related?
Limiting factors determine a population's carrying capacity.
If you have fewer limiting factors, the carrying capacity is larger. If there are more limiting factors, the carrying capacity is smaller.
500
Why would a plant benefit from having a taproot as an adaptation?
It allows the plant to access water stored deeper underground.
500
How does this comic show natural selection?
The cactus with the needles is better adapted (it isn't eaten by the deer), lives long enough to reproduce (it has blooms/flowers on it!!) and passes on its favorable trait/adaptation (needles).
Over time, we'd expect to see more cacti with needles.