Phloem translocation answers

IB Biology: Phloem translocation answers

Radioactive isotopes can be used track the movement of sucrose by translocation in the phloem. The radioactivity can be traced using photographic film (an autoradiograph). In a typical experiment like those carried out by Bidulph and Cory at Washington State university in the 1960s a plant is grown in the lab and one leaf is exposed for a short time to carbon dioxide containing the radioactive isotope 14C.


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