Biology Fall 2011-2012 Exam Review

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Biology Fall 2011-2012 Exam Review

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The graphs above show the results of two separate experiments on the same species of plant. Students now want to determine how the use of rainwater or bottled water affects the growth of this plant. Which conditions should be used for optimal growth as the two water types are tested? Answer:_______________________________________________________________________________________________________________ WHY?_________________________________________________________________________________________________________________

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The diagram above shows a setup for a plant investigation. Which variable is most likely being tested? Answer:_______________________________________________________________________________________________________________ WHY?_________________________________________________________________________________________________________________ [pic]

The graph above shows the birth rate and death rate for a population during the 1900’s. From 1900 to 2000, what has happened to the population? Answer:_______________________________________________________________________________________________________________ WHY?_________________________________________________________________________________________________________________

A student hypothesizes that green algae will grow fastest when exposed to blue light. To test this hypothesis, the student should design an experiment with which independent variable? Answer:_______________________________________________________________________________________________________________ WHY?_________________________________________________________________________________________________________________

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As part of an experiment to measure decomposition rates of different materials, students put food scraps from the cafeteria to compost bin A and leaves and grass clippings in compost bin B. Students in first period measured the temperature in bin A, and the students in sixth period measured the temperature in compost bin B. What is the greatest source of error in the students’ experimental design? Answer:_______________________________________________________________________________________________________________ WHY?_________________________________________________________________________________________________________________

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A student constructs several terrariums like the one shown. Each terrarium is exposed to a different amount of sunlight each day. In order to determine the ideal amount of sunlight, which of the variables should be held constant? Answer:_______________________________________________________________________________________________________________ WHY?_________________________________________________________________________________________________________________

Two students were testing the amount of fertilizer that would best promote the growth of strawberries in a garden. List variables you would not be able to control within the experiment: Answer:_______________________________________________________________________________________________________________ WHY?_________________________________________________________________________________________________________________

A scientist develops a hypothesis, designs and experiment and obtains data that supports her hypothesis. When would his hypothesis become a theory? Answer:_______________________________________________________________________________________________________________ WHY?_________________________________________________________________________________________________________________

In a pond, the primary producer is a green alga, Spyrogyra; the primary consumer is the crustacean, Daphnia; the secondary consumer is a small fish, the bluegill; and the tertiary consumer is a larger fish, the smallmouth bass. What changes can be expected in the pond if the Daphnia are killed with...
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