DP Biology (first assessment 2025)

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Question 19N.2.SL.TZ0.b

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Date November 2019 Marks available [Maximum mark: 3] Reference code 19N.2.SL.TZ0.b
Level SL Paper 2 Time zone TZ0
Command term Outline Question number b Adapted from N/A
b.
[Maximum mark: 3]
19N.2.SL.TZ0.b

Outline how variation in organisms of the same species could lead to natural selection.

[3]

Markscheme

a. survival of the better adapted/fittest ✔

b. more reproduction of better adapted/fittest/individuals with favorable variations ✔

c. genes for favorable variations/adaptations passed on to offspring ✔ Accept answers in the converse.

d. competition for resources/more offspring produced than the environment can support/a struggle for existence ✔ Accept answers in the converse.

Syllabus sections