Question 21M.2.HL.TZ2.1f
| Date | May 2021 | Marks available | [Maximum mark: 2] | Reference code | 21M.2.HL.TZ2.1f |
| Level | HL | Paper | 2 | Time zone | TZ2 |
| Command term | Compare and contrast | Question number | f | Adapted from | N/A |
Compare and contrast the effect of clothianidin and thiacloprid treatments on the concentration of acetylcholine in royal jelly.
[2]
a. both neonicotinoids reduce the concentration of acetylcholine in royal jelly (compared to control) ✔
b. clothianidin reduces the concentration of acetylcholine in royal jelly more than thiacloprid (but perhaps not statistically different) ✔
c. clothianidin is used in smaller concentrations (than thiacloprid) so no firm conclusion can be obtained ✔
Need one similarity and one difference.
In general, the data analysis question was well attempted by the majority of students.
A compare and contrast question, that required one similarity and one difference. Most were able to state that both treatments reduce the acetylcholine concentration in the royal jelly and that clothianidin reduced it more than thiacloprid. The more astute also commented on the differences in concentrations of the insecticides.
