You and your neighbor each have a holly bush in your yards. You carefully water and care for your bush, but it fails to produce berries. Your neighbor, on the other hand, neglects his holly, yet it produces gorgeous red berries each year. Finally, in frustration, you replace your holly with a rose bush. The next year, your neighbor's holly bush has no berries at all. What happened?
A. Holly plants are dioecious. Yours was a male that was needed to pollinate the neighbor's female.
B. The neighbor's bush became infected with the same disease that yours had.
C. Roses secrete a chemical that inhibits the reproduction of neighboring plants.
D. Roses compete for the same insect pollinators as holly bushes.
Answer: A
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