RHS Student Guide Level 2 Unit 2 - Horticulture and Society

are left too long, the root will shrivel as the stores are converted into energy for growth in early spring. Plant selection in relation to their rooting characteristics should be fully understood. Flowers are part of the sexual reproduction process, and their structure and function should be understood. You should also be able to clearly explain the differences between different flower arrangements, the difference between monocotyledon and eudicotyledon flowers, and how flowers are adapted in form and structure for different pollinators. You should understand the concepts of imperfect and perfect flowers how plants ensure cross-pollination by dioecious characteristics, and the development of different flower parts at different times. You should be able to clearly define pollination and fertilisation and the difference between cross and self-pollination. You should then be able to explain the advantages of cross-pollination, different pollination vectors, and the differences between wind and insect-pollinated flowers. This knowledge should be related to your understanding of plant selection and choosing plants that have flowers adapted for pollinators you want to attract (e.g. insects). The flower structure should be related to specific pollinators e.g. a corymb allows insects to freely move across the inflorescence, legumes provide a landing platform, and are often adapted to specific pollinators such as bumble bees and so on. You should be able to relate to different subjects within the topic to discuss creating habitats for wildlife, choosing appropriate plants for particular settings and conditions, the importance of provenance, and how adaptations may impact ecology.

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