You need to know the characteristics, arrangement, function and horticultural importance of:
- Root: xylem, phloem, cambium, epidermis, endodermis. R2101 – Roots
- Stem: xylem, pholem, cambium, epidermis. R2101 – stems but you don’t need the adaptations here. R2101 – Plant Classification, structure and function the dicotyledon stem.
- Leaf: xylem, phloem, epidermis, lamina, stomata, palisade, spongy mesophyll. R2101 – leaves
AO2: you should explain the importance of internal structures for growth and transportation of carbs, minerals and water around and out of the plant.
AO3: You should apply the knowledge of internal structures to horticultural practice, such as the impact of plant diseases in plant internal structure or the modes of action of plant pests. They don’t give any examples in the syllabus, but you could think up something, such as aphids sucking the sugary mixture from the phloem and this can lead to sooty moulds on the plants as well as transmitting diseases.
Gardening studies 