Evolution by Natural Selection

More offspring produced than are needed to simply survive and replace parent generation is called....

• Finite resources

• Natural Selection

• Overproduction

• Survival of the fittest

A limited supply of food or water are examples of _________ resources.

• finite

• infinite

• renewable

• natural

Genetic variations within a species are caused by ____.

• finite resources and natural selection

• overproduction and survival of the fittest

• random mutations and independent assortment of genes

• changes in the environment and adaptations

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What are these examples of; different shapes of beaks, different lengths of necks, different colors of fur?

• environmental factors

• resources

• genetic variations

• overproduction

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When individuals with certain traits get more resources than others.

• Struggle for Survival

• Overproduction

• Finite resources

• Genetic variation

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A genetic trait that allows an individual to successfully survive and reproduce in its given environment.

• Adaptation

• Fitness

• Finite resources

• Genetic variation

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Which is an example of an individual with high fitness?

• A cheetah that runs faster than the gazelle it eats.

• A gazelle that runs slower than the cheetah chasing it.

• A fast cheetah.

• A fast gazelle.

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Which term refers to how well an individual can survive and reproduce in its environment?

• fitness

• resource

• adaptation

• genetic variation

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Which of the following is the selecting factor that led to the evolution of tough mouthed land iguanas?

• mutant iguanas with tough mouths

• only food available is spiny cactus

• only food was high-up in trees

• tough mouth iguanas were more fit

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Charles Darwin presented the idea that evolution occurs due to _____.

• Selective breeding

• Artificial selection

• Inheritance of acquired traits

• Natural selection

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