Native Plant a Is Endangered

Multiple Choice

Native plant A is endangered. You suspect that part of the reason for its decline is competition with an introduced exotic plant, B, which occupies a similar ecological niche. Which of the following experiments would NOT help you decide whether competition with B contributes to the decline of A?

A) Raise each species by itself in the absence of competition in a greenhouse, and measure growth and reproductive rates.
B) Establish experimental plots in which you remove plant B.
C) Count the number of seeds produced by A and B in nature.
D) Compare their DNA.