plants.
Figure 6.1: Flowering plants such as the acacia tree.Figure 6.2: Gymnosperms are non-flowering plants such as pine trees or ”black spruce” shown above.
In angiosperms, thecotyledonis part of the seed of the plant. The number of cotyledons
(mono- or di-) is used to classify flowering plants. Monocotyledonous plants have one cotyle-
don, dicotyledonous plants have two. Plants belonging to each group have a number of
features in common, such as the leaf and root structure, the strength of the stem, the flower
structure and flower parts. Some differences between monocots and dicots are given in
Figure 6.3 and 6.4.
Chapter 6. Support and transport systems in plants 159