Vocabulary
Natural Selection
A
A
Natural Selection
B
B
Natural Selection
C
C
Natural Selection
D
D
100
The process by which species cease to exist is
Extinction
100
Yellow beetle and green beetles live in the rainforest canopy. What will happen to the population?
The green beetle population will increase and the yellow beetle population will decrease.
100
T/F: Survival of the fittest means survival of the strongest & fastest.
False
100
A group of related organisms changing over time is called _____.
Evolution
100
In an arctic environment, which would survive longer: red foxes or white foxes?
White foxes
200
A trait that helps an organism to survive and reproduce in its environment
Adaptation
200
What would happen if the environment changes drastically and no organisms have fitting adaptations?
The species could go extinct.
200
After traveling to the Galapagos Islands, Darwin noticed a lot of variation among beak sizes in Finches. This variation was a result of:
Different food sources.
200
When a predator is not present, what other factors determine an organism's survival?
Environment or food source
200
Where did Darwin study the beaks of finches?
Galapagos Islands
300
A group of individuals of the same species living within a given area
Population
300
What is most likely to happen to moth populations in the picture shown if they live in areas with birch wood.
Dark moth population would be hunted easily and decrease.
300
Does natural selection typically take a long time or a short time?
Long time
300
Over a period of years, the average rainfall in an area decreases, causing environmental changes. What factor is the most important to give the species a chance at survival?
Variation
300
A group of fish have been observed to show changes in mouth structure over many generations. What is this change a result of?
Fish adapting to the food source for survival.
400
What is a change in a gene that results in a new trait?
Mutation
400
Differences among a species are called _____.
Variations
400
Young or babies that are produced through reproduction are also called _____.
Offspring
400
Nature chooses organisms that are _____.
More fit, adapted, suited to their environment
400
Variations that are favorable become known as _____.
Adaptations
500
The process in which species better adapted to the environment survive to reproduce more offspring
Natural Selection
500
Natural selection works (against/for) members less suited for their environment.
Against
500
How does an organism obtain an adaptation?
Organisms that survive, pass down that trait.
500
DDT is a pesticide (insect killer spray) that can be used to get rid of mosquitoes. Most mosquitos are killed by DDT but a small percent are not. If DDT is sprayed in the same area each year, predict how the population of mosquitoes will change each generation.
Mosquitos who were already resistant to DDT will survive and produce offspring.
500
Ancestors of the Galapagos finches who had large strong beaks were most likely adapted to eating?
Hard shelled seeds