DP Biology (first assessment 2025)
Question 21N.2.SL.TZ0.d
| Date | November 2021 | Marks available | [Maximum mark: 1] | Reference code | 21N.2.SL.TZ0.d |
| Level | SL | Paper | 2 | Time zone | TZ0 |
| Command term | State | Question number | d | Adapted from | N/A |
d.
[Maximum mark: 1]
21N.2.SL.TZ0.d
All of the leaves in the image are from Solanum, a wild genus of tomato.
[Source: Courtesy: National Science Foundation, Credit Leonie Moyle.]
State one cause of variation in a plant such as the tomato.
[1]
Markscheme
a. mutations;
b. meiosis/crossing over/random assortment of homologous pairs;
c. sexual reproduction/recombination/random fertilisation;
Examiners report
In 3d there was a great deal of variety in the leaf shape, so an answer in terms of sexual reproduction was looked for.
