Ecosystems
Natural Selection
Charles Darwin
Surprise!
100
Define Ecosystems
the network of interactions that link the living part of the environment and a non-living part
100
Define Natural Selection
Process by which organisms with favorable traits are able to survive and reproduce better and over time become more common in the population
100
Define Natural Selection
Natural selection is the process by which organisms better adapted to their environment tend to survive and reproduce more successfully, leading to the gradual evolution of a species over time
100
True or false. Mutations are not random and can be chosen by people.
False. Mutations are random
200
Define Habitat
the physical space where a certain species lives
200
What is an adaptative trait?
A TRAIT that helps an organism to survive and reproduce better in its environment
200
Can an organism "CHOOSE" to evolve and change?
No, organisms CANNOT CHOOSE to change their genes or traits!
200
What is an example of Mimicry?
Mimicry – look like another, more dangerous animal
300
Define Genetic Variation
Differences that exist within a population or the same species
300
Yellow beetle and green beetles live in the rainforest canopy. You would expect:
The green population of beetles will increase and the yellow population will decrease
300
Ancestors of the Galápagos finches who had large strong beaks were most likely adapted to eating?
What are seeds or hard shelled foods.
300
Which of the following is NOT a trait that has evolved in Galápagos finches?
A. Beak size and shape
B. Ability to fly
C. Diet
B. Ability to fly
400
In an arctic environment, which would survive longer: red foxes or white foxes?
White foxes
400
What process is labeled as "survival of the fittest"?
Natural Selection
400
After traveling to the Galapagos Islands, Darwin noticed a lot of variation among beak sizes in Finches. This variation was a result of:
Developing different adaptations in order to survive on particular islands, specific to foods they eat.
400
How does the environment play a role in natural selection?
It determines which traits are beneficial for survival.
500
What is a change in a gene that results in a new trait?
What is a mutation?
500
What is a change or difference in offspring called?
What is a variation?
500
Is it learned (behavioral) or inherited (structural)?
1. Behavioral
2. Structural
3. Behavioral
4. Structural
500
Define a Favorable Trait
A trait that is beneficial to an organism and will likely be chosen by natural selection