DP Biology (first assessment 2025)

Test builder »

Question 19N.2.SL.TZ0.1f.i

Select a Test
Date November 2019 Marks available [Maximum mark: 1] Reference code 19N.2.SL.TZ0.1f.i
Level SL Paper 2 Time zone TZ0
Command term State Question number f.i Adapted from N/A
f.i.
[Maximum mark: 1]
19N.2.SL.TZ0.1f.i
(f.i)

State the reason for performing the experiment in the months of May to August.

[1]

Markscheme

because nymphs are present/numbers of nymphs rise «in these months»
OR
build up immunity/antibodies in mice before nymphs «peak» ✔

Ignore references to larvae.

Syllabus sections