Aphids are small insects that feed on plants.
In summer, when there is plenty of food, female aphids reproduce asexually.
In autumn, before the cold weather of winter, aphids reproduce sexually.
Explain one advantage to aphids of reproducing asexually in summer.
Explain why it is an advantage to aphids to reproduce sexually in autumn.
Give one disadvantage to aphids of sexual reproduction.
92 exam-style questions on Edexcel GCSE Biology 3.1 Reproduction and meiosis, covering 3.1.1 Advantages and disadvantages of reproduction and 3.1.2 Role of meiotic cell division. Each one has a worked solution and a mark scheme showing where the marks go.