Spring Science Review #1

Wheat was one of the first plant crops that humans domesticated. In the process of domestication, the wild form of wheat was eventually changed into a form more suited to human agricultural practice.

Early farmers most likely used seeds only from wheat plants with —

• A.

  larger grains that could produce more food per plant

• B.

  taller stems that could block sunlight from weeds growing at ground level

• C.

  larger flowers that could be sold for additional income

• D.

  thinner stems that could endure heavy winds

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Some dairy farmers want to increase the amount of milk produced by their cows. How can the farmers use selective breeding to increase milk production?

• A.

  By increasing the age of the cows that are bred

• B.

  By choosing cows that are high milk producers

• C.

  By limiting the number of offspring per cow

• D.

  By choosing cows that can produce milk after eating the most food

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When peppered moths on soot-covered trees develop dark color over generations to avoid predation, it is an example of 

 

_____________ __________.

When a farmer crosses two cows with desirable traits, it is an example of ______________ ______________

• natural selection

  adaptation

• natural selection

  selective adaptation

• selective breeding

  natural selection

• natural selection

  selective breeding

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Rabbits in most areas have a brown coat. The arctic hare has a bright white coat in winter. How does the arctic hare's white color help it survive?

• A.

  It makes the hare warmer during the summer.

• B.

  It helps the hare blend into its background.

• C.

  It makes the hare appear larger to predators.

• D.

  It helps the hare stay warm during the winter.

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Birds often migrate when seasons change. Which of the following best explain the behavioral adaptation of migration in birds?

Select TWO correct answers.

• A.

  Birds migrate due to decreasing food resources caused by a change in weather.

• B.

  Birds migrate in order to gain new insight.

• C.

  Birds migrate to find better nesting locations suitable for raising their young.

• D.

  Birds migrate due to increasing food resources in the area they live.

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Pick the correct word to make the sentence true.

In a group of giraffes eating leaves from trees, the 

_________

 giraffe will be able to get the most food.

• heaviest

• youngest

• tallest

• slowest

Organisms within the same species have variations that can be external, physiological, or behavioral. What are examples of variations of external features of individuals in a population?

Pick THREE correct choices.

• A.

  An otter with thicker fur than other members of its population

• B.

  A bear that hibernates earlier than other members of its population

• C.

  A plant with a longer root system than other members of its population

• D.

  A rose bush has slightly longer thorns than other members of its population

During the process of photosynthesis —

• A.light energy is converted to chemical energy

• B.chemical energy is transformed

• C.thermal energy is changed to chemical energy

• D.solar energy is transformed to mechanical energy

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During photosynthesis, energy is stored in the chemical bonds of —

• A.Oxygen

• B.Carbon dioxide

• C.Glucose

• D.Water

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Energy from the sun is transformed into what type of energy through the process of photosynthesis

• A.Radiant

• B.Chemical

• C.Thermal

• D.Electrical

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