The most effective choice is:
(Choice B) at 48 hours, approximately 50% of seeds treated with H2S at a concentration of 10 micromoles per liter had germinated, whereas only approximately 30% of untreated seeds had germinated.
This choice provides specific data regarding the germination rates of treated seeds compared to untreated seeds at a particular time point, showing the accelerated germination associated with the H2S treatment.
In high concentrations, hydrogen sulfide (H2S) is typically toxic to many plants. Frederick D. Dooley and colleagues wanted to understand what effects low doses of H2S might have on plant growth. They treated bean, corn, wheat, and pea seeds with various concentrations (measured in micromoles per liter) of H2S and tracked the germination of those seeds along with the germination of untreated seeds. Treatment with particular concentrations of H2S was associated with accelerated germination: for example, ______
Which choice most effectively uses data from the graph to complete the statement?
Choose 1 answer:
Choose 1 answer:
(Choice A) at 168 hours, more than 90% of seeds treated with H2S at concentrations of 10 or 500 micromoles per liter had germinated, whereas less than 70% of untreated seeds had germinated.
A
at 168 hours, more than 90% of seeds treated with H2S at concentrations of 10 or 500 micromoles per liter had germinated, whereas less than 70% of untreated seeds had germinated.
(Choice B) at 48 hours, approximately 50% of seeds treated with H2S at a concentration of 10 micromoles per liter had germinated, whereas only approximately 30% of untreated seeds had germinated.
B
at 48 hours, approximately 50% of seeds treated with H2S at a concentration of 10 micromoles per liter had germinated, whereas only approximately 30% of untreated seeds had germinated.
(Choice C) at 24 hours, less than 10% of seeds treated with H2S at a concentration of 10 micromoles per liter had germinated, whereas more than 90% of those seeds had germinated at 168 hours.
C
at 24 hours, less than 10% of seeds treated with H2S at a concentration of 10 micromoles per liter had germinated, whereas more than 90% of those seeds had germinated at 168 hours.
(Choice D) at 48 hours, more than 70% of seeds treated with H2S at a concentration of 10 micromoles per liter had germinated, whereas only approximately 50% of untreated seeds had germinated.
D
at 48 hours, more than 70% of seeds treated with H2S at a concentration of 10 micromoles per liter had germinated, whereas only approximately 50% of untreated seeds had germinated.
1 answer
1 answer