Unit 4 · Plant Form and Function

A/L Biology

• Plant tissues
• Structure of the root
• Structure of the stem
• Structure of the leaf
• Secondary growth
• Uptake of water and minerals by roots
• Ascent of water in the xylem
• Transpiration and the stomatal mechanism
• Translocation in the phloem
• Mineral nutrition in plants
• Plant growth regulators
• Plant responses to the environment
• The flower, gametes and pollination
• Fertilisation, seeds, fruits and germination
• Alternation of generations
• Vegetative propagation