DP Biology (first assessment 2025)
Question 19N.1B.SL.TZ0.1b
| Date | November 2019 | Marks available | [Maximum mark: 1] | Reference code | 19N.1B.SL.TZ0.1b |
| Level | SL | Paper | 1B | Time zone | TZ0 |
| Command term | Suggest | Question number | b | Adapted from | N/A |
b.
[Maximum mark: 1]
19N.1B.SL.TZ0.1b
(b)
Suggest a reason for the difference in the isotonic points for the potato and the carrot tissues.
[1]
Markscheme
different dissolved solutes/sugars/sucrose/salts/molarities ✔
OR
may have been grown in different soils giving their tissues different contents ✔
OR
may have been stored under different conditions ✔
OR
may be more dehydrated / different water content ✔
OR
different types of tissue / different age ✔
Do not accept starch.
