Test: AP Biology

1.

Which of the following techniques could be used to determine if a species of plant requires potassium?

Analyze root contents for potassium

Measure how fast radioactive potassium enters the plant

Use autoradiography to find potassium in leaf tissues

Measure the amount of potassium in a sample of plants

Grow a sample of plants in a potassium-rich environment and another sample in a potassium-deprived environment

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