DP Biology (first assessment 2025)

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Question 19N.2.SL.TZ0.a

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Date November 2019 Marks available [Maximum mark: 4] Reference code 19N.2.SL.TZ0.a
Level SL Paper 2 Time zone TZ0
Command term Draw Question number a Adapted from N/A
a.
[Maximum mark: 4]
19N.2.SL.TZ0.a

Draw a half-view of an animal-pollinated flower.

[4]

Markscheme

a. sepals as outermost part of flower ✔

b. petals as largest part of flower ✔

c. stamen drawn with recognizable anther and filament
OR
anther and filament shown as parts of the stamen ✔

d. carpel/pistil drawn with recognizable stigma, style and ovary
OR
stigma, style and ovary shown as parts of the carpel ✔

e. nectary at base of the ovary ✔

f. ovule inside the ovary ✔

As the question does not specify a labelled half-view, allow some marks for unlabeled structures: award one mark for any two of the six structures in the mark scheme (mpa to mpf). It must be clear what each unlabeled part is. The maximum mark is therefore 3 for an unlabeled half-view.

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