Darwin's Theory Answers

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Check all statements below that are true.

A
All organisms must compete for survival.
B
When organisms struggle to survive, they usually mutate to increase chances of reproduction.
C
Some organisms have phenotypes that make them better competitors than others in their environment.
D
Animals undergo natural selection, but plants and other organisms generally do not.
E
Natural selection continues to occur even today.
F
Phenotypes found in the most successful members of a species become the most prevalent after several generations.
G
A decrease in food availability will increase the variation in a population.
4

Check all possible effects of this selective pressure.

A
Flock X may try to eat other foods.
B
Flock X could migrate in search of fruit.
C
Flock X could slowly decrease in number.
D
Flocks Y and Z could benefit and increase.
E
Flock X could try to mutate.

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