Agrobacterium Infects Plants and Causes Them to Form Tumours

question 21

Multiple Choice

Agrobacterium infects plants and causes them to form tumours. You are asked to determine how long a plant must be exposed to these bacteria to become infected. Which of the following experiments will provide the best data to address that question?

• A) Determine the survival rate of Agrobacterium when exposed to different concentrations of an antibiotic.
• B) Measure the number of tumours formed on a plant when exposed to various concentrations of Agrobacterium.
• C) Measure the concentration of Agrobacterium in different soil environments where the plants grow.
• D) Measure the number of tumours formed on plants which are exposed to Agrobacterium for different lengths of time.

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