Final Exam Review #2 Honors Biology B

A biologist spent many years researching the rate of evolutionary change in the finch population on a group of islands.  It was determined that the average beak size(both length and mass) of finches in a certain population increased dramatically from 1981-1987 during an intense drought.  During the drought, there was a reduction in the number of plants producing thin-walled seeds.  What data would they need to collect?

• The size of beaks from two birds from 1985-1986.
• The size of beaks of many finches from before, during, and after the drought.
• The beak size of one bird from 1981-1987.
• The beak size of many birds in 1981.

A biologist spent many years researching the rate of evolutionary change in the finch population on a group of islands.  It was determined that the average beak size(both length and mass) of finches in a certain population increased dramatically from 1981-1987 during an intense drought.  During the drought, there was a reduction in the number of plants producing thin-walled seeds. Based on the data, why was there an increase in beak size?

• Natural selection favored birds with larger beaks because they could crack open larger seeds.
• Birds with larger beaks were able to kill birds with smaller beaks during the drought.
• Natural selection favored birds with smaller beaks that could not crack open larger seeds.
• Birds with larger beaks were more attractive to mates and were more fit.

A biologist spent many years researching the rate of evolutionary change in the finch population on a group of islands.  It was determined that the average beak size(both length and mass) of finches in a certain population increased dramatically from 1981-1987 during an intense drought.  During the drought, there was a reduction in the number of plants producing thin-walled seeds. Based on the data, why was there an increase in beak size?

• Natural selection favored birds with larger beaks because they could crack open larger seeds.
• Birds with larger beaks were able to kill birds with smaller beaks during the drought.
• Natural selection favored birds with smaller beaks that could not crack open larger seeds.
• Birds with larger beaks were more attractive to mates and were more fit.

A biologist spent many years researching the rate of evolutionary change in the finch population on a group of islands.  It was determined that the average beak size(both length and mass) of finches in a certain population increased dramatically from 1981-1987 during an intense drought.  During the drought, there was a reduction in the number of plants producing thin-walled seeds.  What would happen if the drought ended?

• Beak sizes would most likely remain large.
• Beak sizes would most likely return to the sizes present before the drought.
• Beak sizes would continue to increase.
• Beak sizes would not change.

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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Do organisms "decide" to evolve and change?

• Yes, they know they need to change to survive 
• No, they change because of natural selection

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The gradual change in species over time is...

• Evolution
• Nucleotide 
• Adaptation
• Natural Selection

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What type of succession is shown going from figure A to figure B?

• primary succession
• ecological succession
• secondary succession
• intermediate

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What is the goal of the pioneer species in Primary Succession?

• To kill the dead materials after a disaster
• To rebuild soil
• To feed Johnny
• To put fresh oxygen into the air

The picture shows what type of succession?

• primary
• secondary
• tertiary
• quadanary

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