A pest damages the cuticle of a leaf but does not break the walls of the cells below it.
Which statement describes the defences remaining at the damaged area?
the surface barrier is strengthened, but cell walls no longer resist entry
the surface barrier is unchanged, but cell walls no longer resist entry
the surface barrier is weakened, but cell walls still resist entry
the surface barrier is removed, and cell walls are removed with it
45 exam-style questions on Edexcel GCSE Biology 5.2 Plant and body defences, covering 5.2.1 Physical plant defences, 5.2.2 Chemical plant defences, 5.2.3 Detecting plant diseases, and 5.2.4 Human physical and chemical defences. Each one has a worked solution and a mark scheme showing where the marks go.