7.2. Transport mechanisms
A subsection of Biology, 9700, through 7. Transport in plants
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shows the movement of sucrose from source to sink through the phloem in a plant. water water water water Key C source sink sucrose molecules chloroplast sucrose made in cytoplasm starch grain sucrose glucose + fructose water D Examiner’s Use With reference to , name an example of a source and a sink source sink name cells C and D. C D With reference to , explain how sucrose travels from, the source to cell C cell C to the sink. Explain why multicellular plants require transport systems for substances, such as water and sucrose.
9700_s07_qp_2
THEORY
2007
Paper 2, Variant 0
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