Practice IB Biology Topic 5.1 Evidence for Evolution with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for 5.1 Evidence for Evolution and mirrors Paper 1A, 1B, 2 style where relevant.
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The table provides data on the forelimbs of three different mammals.
| Mammal | Mode of locomotion | Internal bone pattern |
|---|---|---|
| Porpoise | Swimming | Humerus, radius, ulna, carpals, 5 digits |
| Anteater | Digging | Humerus, radius, ulna, carpals, 5 digits |
| Chimpanzee | Climbing | Humerus, radius, ulna, carpals, 5 digits |
Which statement best explains the similar bone arrangement in these mammals?
The graph shows the change in the average number of days required for broiler chickens to reach a market weight of between 1950 and 2010. During this period, commercial breeders consistently selected only the fastest-growing individuals for reproduction.
Which statement explains how these data provide evidence for the theory of evolution?
What causes variation in both sexually and asexually reproducing organisms?
What is accepted by scientists as evidence for evolution?
I. Similarities in bone structure between the wings of a bat and the fins of a porpoise
II. Changes in dog breeds caused by artificial selection
III. Extinction of dinosaurs
Which example provides evidence of evolution?