Biology B (9-1) - Twenty First Century Science Suite J257 9-1: Life on Earth – past, present and future Topical Past Paper Questions
OCR GCSE (9-1) Biology B (9-1) - Twenty First Century Science Suite J257 (9-1) past-paper questions on Life on Earth – past, present and future, free. This topic is frequently examined across 6 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
Vegetable crops such as peas are grown to help feed the world's population. (a) Wild pea plants produce only a small number of peas per plant. Farmers started with wild pea plants and have changed the characteristics of the pea plants they grow. The change happened over many gene…
Elephants live in the wild in Mozambique, Africa. Some elephants inherit an allele that causes them to never develop tusks. This no-tusks allele is the result of a mutation. (a) Mutations to alleles happen quite often. Explain why mutations often have no observable effects. [3] (…
In the 1800s, Darwin and Wallace suggested natural selection as an explanation for evolution. (a) What can happen as a result of natural selection? Tick (✓) two boxes. New species can be formed. Species can become less well adapted to their environment. Species can choose how the…
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