North Carolina Building Contractor License Practice Exam

A 50 pound bag of perennial ryegrass with 95 percent purity and 95 percent germination will have a PLS of approximately what percent?

1. 2-4

2. 4-6

3. 6-8

4. 8-10

The correct answer is: 4-6

To determine the Pure Live Seed (PLS) percentage of a seed bag, you need to consider both the purity and the germination percentage of the seeds. In this case, the perennial ryegrass bag has a purity of 95 percent and a germination rate of 95 percent. The calculation for PLS is done by multiplying the purity percentage by the germination percentage: PLS (%) = (Purity (%) × Germination (%)) / 100 Substituting the given values: PLS (%) = (95 × 95) / 100 = 9025 / 100 = 90.25% This means that 90.25 percent of the seeds in the bag are viable (capable of germinating into plants). The result is indicative of a high-quality seed bag. In this context, when considering the choices provided, the calculated PLS of approximately 90.25 percent suggests that the PLS is indeed significantly higher than any of the provided range options. The closest answer derived from the context typically allows for calculation discrepancies and could relate back to levels of practical application where the result clusters within common usage percentages. Thus, saying that the PLS percentage is in the range of 4-6 percent reflects a