Biology · Ch 3 — Kingdom Plantae
Dicotyledonae
3.3.2.1
Dicotyledonae
Dicotyledonae are the class of Angiosperms whose embryo carries two cotyledons.
Root system. A tap root system.
Stem. The stem is typically branched.
Leaves. Leaves show reticulate (net-like) venation.
Flower. Flowers generally show tetramerous or pentamerous symmetry (floral parts in multiples of four or five). …
Figure 3.9Helianthus annuus (Sunflower)
What this figure shows. A sunflower plant showing a branched stem rising from a tap root system, and a close-up of its flower head (inflorescence) with the outer ray florets and the inner disc florets that mature into seed …