Question

Read the following statements and identify the incorrect statement related to David Tilman's experiments on outdoor plots.

• A. Stability of a community depends on its species richness
• B. Greater diversity in community led to higher productivity
• C. The experiments were performed in grassland ecosystems
• D. Plots with more species showed more year to year variation in total biomass

Answer 1

The correct option is D Plots with more species showed more year to year variation in total biomass

David Tilman showed that stability of a community depends on its species richness. So, option a is correct.
He performed long-term ecosystem experiments using outdoor plots in grassland ecosystems. So option c is correct.
He found that plots with more species showed less year to year variation in total biomass. Hence option d is incorrect.
He also found that increased diversity contributed to higher productivity. Hence option b is correct.