One spider plant produces 40 plantlets on its stems. The plantlets are rooted and grown under the same glasshouse conditions. They are then exposed to the same drop in temperature.
Which statement predicts how the plantlets will respond and gives the correct reason?
They may show similar responses to the temperature drop because their genes came from two parent plants
They may show varied responses to the temperature drop because each plantlet received half the parent's chromosomes
They may show similar responses to the temperature drop because they are genetically identical
They may show varied responses to the temperature drop because mitosis gives each plantlet different alleles
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.