Question

Stomata are pores on the surfaces of the leaves and stems of plants that regulate gas exchange between the plants and the atmosphere.
Researchers found that the stomata density on the leaves of a species of plant change as the concentration of CO, in the atmosphere changes. When grown at 350 ppm CO, the plant has an
average density of 300 stornata per mm, but when grown at 400 ppm CO, the plant has an average density of 250 stomata per mu?
Which of the following bent describes how the ratio of the density of stomata (stomata per mon) per CO, concentration (ppm CO2) changes as the Co, concentration increases?
A The ratio decreases from 0.86 to 0.63, because fewer stomata are needed at higher CO, concentrations,
B
The ratio decreases from 1.6 to 1.2 because fewer stomata are needed at higher CO, concentrations
с
The ratio increases from 0.63 to 0.86, because more stomata are needed at higher CO, concentrations
D
The ratio increases from 1.2 to 1.6 because more stomata are needed at higher CO, concentrations

Answer 1

Answer: The answer is B

Explanation: The ratio decreases from 1.6 to 1.2 because fewer stomata are needed at higher CO, concentrations

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