Glycogen is an extensively branched glucose polymer that animals use as an energy reserve. It is the animal analog to starch. (MeSH. 2024. Glycogen. https://meshb-prev.nlm.nih.gov/record/ui?ui=D006003)
Vascular plants such as conifers, cycads, ginkgo and others that reproduce by means of an exposed seed or ovule, as opposed to an angiosperm or flowering plant, which have seeds enclosed by mature ovaries or fruits. Gymnosperm seeds develop either on the surface of scale- or leaf-like appendages of cones, or at the end of short stalks. (Ariadne Portal. 2026.Gymnospermae https://portal.ariadne-infrastructure.eu/subject/300343812?derivedSubject=Gymnospermae)
