Passage III
Scientists studied the effects of pH and of nickel concentration on plant growth and on the uptake of iron and zinc by plants. Recently germinated seedlings of Species M and Species U were fed 1 of 12 nutrient solutions (Solutions 1−12) for 8 days and then were harvested. Solutions 1−12 differed only in pH and/or nickel concentration.Table 1 shows, for each species, the average dry mass of the plants that were fed each nutrient solution. Figure 1 shows, for each species, the average iron content and the average zinc content of the plants that were fed Solutions 1−4.
16. According to Table 1, the Species U plants that were fed the solution that had a pH of 6 and a nickel concentration of 10 μ M had an average dry mass of:
Your Answer is
Correct Answer is G
Explanation
See Table 1, pH6, Nickel concentration 10, Species is U, the value is 8.1.