DP Biology (first assessment 2025)

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Question 21N.1A.SL.TZ0.21

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Date November 2021 Marks available [Maximum mark: 1] Reference code 21N.1A.SL.TZ0.21
Level SL Paper 1A Time zone TZ0
Command term Question number 21 Adapted from N/A
21.
[Maximum mark: 1]
21N.1A.SL.TZ0.21

Scientists studying ground finches (Geospiza fortis) on the island of Daphne Major in Galapagos found great differences in the shapes of the beaks.

[Source: Public domain.]

What is the explanation for this variation in beak shape between the birds?

A. Ground finches grow larger beaks if there is competition for food.

B. They belong to different species.

C. They are adapted for different diets.

D. The more a beak is used by a ground finch, the larger it becomes.

[1]

Markscheme

C

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