Biology A H020: Classification and evolution Topical Past Paper Questions
OCR AS Biology A (H020) past-paper questions on Classification and evolution, free. This topic is frequently examined across 5 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
Bats are mammals that hunt insects while flying. Dolphins are mammals that hunt fish while swimming. Some bats and all dolphins use a technique known as echolocation to hunt their prey. They emit sound waves which reflect back to them to show the location of prey. What explains w…
The age of a fossil can be calculated based on its position in rock layers in the ground. Fossils of different ages can be compared to provide evidence of evolution and to help construct phylogenies. (a) Diatoms are single-celled organisms that have glass-like cell walls, which c…
The harlequin ladybird, Harmonia axyridis, has many different distinct forms, two of which can be seen below. Which of the terms, A to D, best describes this type of variation? A interspecific continuous B interspecific discontinuous C intraspecific continuous D intraspecific dis…
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