Answer
1.31x$10^8$spores/1.10cm$^2$=1.19x$10^8$ spores/cm$^2$ 6.87x$10^9$spores/8.37cm$^2$=8.2x$10^8$ spores/cm$^2$ Thus, the second basidiocarp produced around 7 times more spores per unit area than the first.
Work Step by Step
Just find the ratio of spores to area in each case, being careful about exponents and division. Then compare the two to see which structure produced more spores.
