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Vstop v floem:<br />

• a) simplastni -odprti tip; drevesa;<br />

plazmodezme; oligosaharidi, polioli, ...; izvirni tip<br />

• b) apoplastni - zaprti tip: zelišča;<br />

plazmodezem ni; saharoza glavna tranportna<br />

oblika C; pri C4 rastlinah pogosta Krantz<br />

anatomija (celice žilnega ovoja, "bundle sheat<br />

cells")<br />

• c) prehodne oblike: transportne celice z<br />

membransko-stenskim kompleksom.<br />

• Ekološki in evolucijski vidiki transportnih celic -<br />

"nalaganja floema"; pregled the znakov v<br />

sistemu semenk

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