DP Biology (first assessment 2025)

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Question 19M.2.SL.TZ1.14c

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Date May 2019 Marks available [Maximum mark: 2] Reference code 19M.2.SL.TZ1.14c
Level SL Paper 2 Time zone TZ1
Command term Describe Question number c Adapted from N/A
c.
[Maximum mark: 2]
19M.2.SL.TZ1.14c
(c)

Describe how the changes in world rock phosphate production after 1985 may have affected world food supplies.

[2]

Markscheme

a. phosphorus is important as a fertilizer ✔

b. a drop in phosphate could lead to less agricultural output ✔ 

c. «this could mean» less food available for increasing population ✔

Examiners report

Students who struggled to read the graph correctly had problems with this question. Very few scored the full marks here, as only a small number of students clearly stated that rock phosphates were used as fertilisers to increase plant growth. Few students composed coherent answers that tied together fertiliser use, agricultural output and food.

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