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Unformatted text preview: chloroplasts) Buoyancy, (Called aerenchyma as in floating leaves that have huge air spaces Storage (May contain a number of substances) Transverse H 2 O movement in secondary growth (ray cells) Transfer cells. Transfer cells have wall ingrowths (invaginations) that increase surface area. Transfer cells help move solutes across short distances. They are often found in veins, leaf traces, and reproductive structures. Secretion cells that line ducts and glands (nectar, oils, gums, hormones) are transfer cells. Parenchyma cells...
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- Fall '09