DP Biology (first assessment 2025)

Test builder »

Question 23M.1B.SL.TZ1.3a

Select a Test
Date May 2023 Marks available [Maximum mark: 1] Reference code 23M.1B.SL.TZ1.3a
Level SL Paper 1B Time zone TZ1
Command term Suggest Question number a Adapted from N/A
a.
[Maximum mark: 1]
23M.1B.SL.TZ1.3a
(a)

Suggest a reason for including a lid with vents above the water reservoir.

[1]

Markscheme
  1. lowers evaporation of water;
  2. vents allow air to enter as water leaves the reservoir;
  3. allows for pressure changes in the reservoir as water flows to the flask;

Syllabus sections