Life Science, Wednesday Closer, 3.13.19

Survival of the Fittest and Evolution were proposed by what scientist?

• Charles Darwin
• Albert Einstein
• Steven Hawking
• Isaac Newton

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In his observations of the finches in the Galapagos Islands, Darwin stated that we could never “watch” natural selection in action.  Why did Darwin believe this?

• Natural selection happens so quickly, it is difficult to see.
• Natural selection is an internal process that can not be outwardly observed. 
• Natural selection occurs over so many generations, it is impossible to see changes occur.
• Natural selection is a process that occurs randomly, and it is unlikely that a human would be present when it occurs.

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Differences amongst different species or within the species. Describes which of the following terms?

• Adaptations

• Variations

• Evolution

• Speciation

The theory of evolution by natural selection means that what is changing over time?

• The inherited traits of a population.
• The acquired traits of a population.
• Hair color and eye color
• Attractive features.

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As a species evolve, they develop ________ and ________ others

• old traits, save
• new traits, save
• old traits, lose
• new traits, lose

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A giraffe has a long neck in order to better reach leaves to eat.  This is an example of _____. 

• an adaptation
• environment
• response
• stimulus

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Where the better adapted organisms survive to pass traits along to offspring.

• Evolution
• Natural Selection
• Extinction
• Artifical Selection

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Which adaptation (for the underlined animal) serves the function of defense?

• A walking stick looks like the twig on which it rests.
• A porcupine’s quills cause a predator to seek another meal.
• A whale filters plankton and krill from the water in which it swims.
• A penguin is dark on top and white below to blend in with the water.

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Which of the following is a physical adaptation for the underlined animal?

• A butterfly has bright colors to warn predators that it is poisonous.
• A hognose snake rolls over, slows its breathing, and hangs its tongue out to play dead.
• A herd of buffalo encircle their young to protect them from a pack of wolves.
• A dung beetle rolls a piece of dung across the desert.

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Why are advantageous traits more likely to be passed onto offspring?

• Because they are more likely to survive and reproduce.
• Because they come from dominant alleles.
• Because they come from recessive alleles.
• Because the trait is an acquired phenotype.

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