Question

The given figure represents the percent germination of gourd seeds after being exposed to various treatments.

Which of the following treatments increases 30% germination rate by day 8?

• A. 6 h $H_{2}S{O}_4$ only
• B. 6 h $H_{2}S{O}_4$ and 12 h $H_2{O}_2$
• C. Hot water control and vinegar control
• D. Vinegar control only
• E. 6 h $H_{2}S{O}_4$, vinegar control and hot water control

Answer 1

The correct option is B 6 h $H_{2}S{O}_4$ and 12 h $H_2{O}_2$

Choice (B) is the correct answer. On day 8, the only treatments that have passed the 30% germination rate mark are 6 h H${}_2$SO${}_4$ and 12 h $H_2{O}_2$. Choice (A) is incorrect because it only includes the 6 h $H_{2}S{O}_4$ treatment. Choices (C), (D) and (E) are incorrect because they all include treatments that have not passed the 30% germination rate mark by day 8.