The cells of the upper epidermis of a leaf contain no chloroplasts. What is the advantage of this to the leaf?
It allows carbon dioxide to diffuse into the cells below
It reduces the amount of water lost from the cells below
It prevents the leaf being damaged by very strong sunlight
It allows light to pass through to the palisade cells below
38 exam-style questions on AQA GCSE Biology 2.3 Plant tissues, organs and systems, covering 2.3.1 Plant tissues and 2.3.2 Plant organ system. Each one has a worked solution and a mark scheme showing where the marks go.