An experiment was carried out on osmosis in carrot (Daucus carota) root tissue and potato (Solanum tuberosum) tuber tissue. Similar sized pieces of tissue were cut and soaked in different sucrose solutions for 24 hours. The results are shown in the graph below.

potato: $0.26 \mathrm{~mol} \mathrm{dm}^{-3} \checkmark$ carrot: $0.50 \mathrm{~mol} \mathrm{dm}^{-3} \checkmark$

Allow a range of $0.22-0.32$ Allow a range of $0.45-0.55$ (Allow 1 max if no units or either unit is omitted)

different dissolved solutes/sugars/sucrose/salts/molarities $\checkmark$ OR may have been grown in different soils giving their tissues different contents $\checkmark$ OR may have been stored under different conditions $\checkmark$ OR may be more dehydrated / different water content $\checkmark$ OR different types of tissue / different age $\checkmark$

Do not accept starch.

a. the data show clear trends OR a trend line could be drawn through these data OR there are no outliers $\checkmark$

b. the error bars/standard deviations shown OR the error bars/standard deviations vary with concentration $\checkmark$

c. sample size is unknown $\checkmark$