A seedling root tip is damaged, destroying its meristem. Cells behind the damaged region remain alive.
Why is the growth of this root likely to decrease?
Fewer old cells are converted directly into new stem cells.
Fewer specialised cells fuse to produce new unspecialised cells.
Fewer new cells are produced for elongation and differentiation.
Fewer new cells lose chromosomes before elongation can occur.
46 exam-style questions on Edexcel GCSE Biology 2.2 Stem cells, covering 2.2.1 Function of stem cells and meristems and 2.2.2 Benefits and risks of stem cells. Each one has a worked solution and a mark scheme showing where the marks go.