Natural Selection and Biodiversity

Which is NOT a requirement of natural selection?

• number of organisms needs to remain steady

• overproduction of the population

• variety of adaptations (different phenotypes)

• the fittest organisms survive

Which of the following BEST models natural selection?

• only the largest organisms have breeding responsibilities

• organisms with certain variations survive and breed

• community of organisms work together to share resources

• a population monopolizes all the resources

Why might an iguana species on one of the Galapagos Islands have a color difference than iguanas on other islands?

• their ancestor iguanas emigrated to the island

• their ancestor iguanas had a genetic variation that was useful

• their ancestor iguanas mutated and changed color

• their ancestor iguanas made themselves a different color

Natural selection is...

• organisms with favorable genetic variations will survive and breed

• the largest species will survive and breed

• a population will work together to use all resources

Per Darwin's theory of natural selection, individuals that survive are those that...

• have the greatest number of offspring

• have characteristics used by their parents

• have variation suited to the environmental conditions

• have variations valued by animal breeders

True or False per the Theory of Natural Selection? A population that is best adapted to survive in its environment will live long enough to reproduce.

• TRUE

• FALSE

What is a trait that helps an organism survive and reproduce?

• characteristic

• adaptation

• advantage

Which of these statements is FALSE?

• If an organism struggles in an environment it will adapt.

• Adaptations are hereditary.

• A genetic mutation can be beneficial to an organism.

Which of the following statements is TRUE?

• Evolution occurs as a result of natural selection.

• Natural selection is another name for evolution.

• Natural selection involves organisms trying to adapt.

Praying mantises laying hundreds of eggs in each egg sac is an example of...

• biodiversity

• fitness

• overproduction

• reproductive success