Analyze Biodiversity Data Practice Test

A student surveys two grassland plots for plant species. Plot 1 contains: bluestem, clover, goldenrod, milkweed, thistle, and ryegrass. Plot 2 contains: bluestem, clover, and goldenrod.

What is the species richness of Plot 1?

A class compares two habitats: a natural meadow and a corn field. The meadow survey found 18 plant species. The corn field survey found 4 plant species (including corn and three weed species).

Which statement is best supported by the data?