DP Biology (first assessment 2025)

Test builder »

Question 19M.1B.SL.TZ1.2a

Select a Test
Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.1B.SL.TZ1.2a
Level SL Paper 1B Time zone TZ1
Command term State Question number a Adapted from N/A
a.
[Maximum mark: 1]
19M.1B.SL.TZ1.2a
(a)

State the function of the tap and reservoir.

[1]

Markscheme

to reset the potometer
OR
move the air column to the right/end
OR
to replace/replenish water in tube ✔

Accept meniscus or air bubble as alternatives to column in all parts of question

Examiners report

All sections of this question revealed that students were unfamiliar with use and set-up of the potometer. This question was also commented on frequently by teachers in the G2 form who noted the absence of reservoirs in some of the potometers used in student labs. However, it was felt that students familiar with the working of any potometer could have used the information in the diagram to answer this question correctly. 

Syllabus sections