BI-2129
Translocation
Biology · Secondary 4 · Medium · Translocation
A plant with a large underground tuber was kept in darkness for three days. Four aphids were then placed on the plant: one on a young leaf, one on an old leaf, one on the upper stem and one just above the tuber. All aphids sucked the same volume of phloem sap. Which aphid would ingest sap with the highest sucrose concentration?
- On the young leaf
- On the old leaf
- On the upper stem
- Just above the tuber
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