Edexcel GCSE Biology

Sexual vs asexual reproduction

Edexcel GCSE Biology revision on Sexual vs asexual reproduction. Aligned to the Pearson Edexcel GCSE Biology 1BI0 specification. This bank has 5 practice questions on this topic.

Sample questions (3 of 5)

  1. Question 1

    Which type of cell division is essential for the production of gametes in sexual reproduction?

    • A) Binary fission
    • B) Meiosis process
    • C) Mitosis division
    • D) Budding mechanism
    Show answer

    Answer: Meiosis process

    Meiosis produces four genetically non-identical daughter cells, each containing half the number of chromosomes found in the parent cell. This ensures that when two gametes fuse during fertilisation, the zygote has the full, correct number of chromosomes for the species.

  2. Question 2

    What is the primary advantage of sexual reproduction compared to asexual reproduction in a changing environment?

    • A) Faster population
    • B) Genetic variation
    • C) Energy efficiency
    • D) Single parent need
    Show answer

    Answer: Genetic variation

    Because sexual reproduction involves the fusion of male and female gametes, the offspring inherit a unique mixture of genetic material. This variation is crucial for natural selection, as it provides a better chance of survival if the environment changes or a new disease emerges.

  3. Question 3

    Which feature of asexual reproduction allows for rapid colonisation of a stable environment?

    • A) Only one parent
    • B) Large gene pool
    • C) Meiotic division
    • D) Gamete fusion
    Show answer

    Answer: Only one parent

    Since there is no need to find a mate or produce specialised gametes, asexual reproduction is much faster and more energy-efficient than sexual reproduction. This allows an organism to quickly produce large numbers of genetically identical offspring, effectively colonising a stable habitat.

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