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O-LevelBiologyPlant Nutrition5090/11 · Oct/Nov 2016 · Q121 Mark

The photomicrograph shows part of a section through a root. [Figure 12.1] The contents of cell X and the contents of cell Y are each tested with Benedict's solution and with iodine solution. Which results are expected?

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Acell X Benedict's solution: +, cell X iodine solution: +, cell Y Benedict's solution: –, cell Y iodine solution: +
Bcell X Benedict's solution: +, cell X iodine solution: –, cell Y Benedict's solution: +, cell Y iodine solution: +
Ccell X Benedict's solution: –, cell X iodine solution: +, cell Y Benedict's solution: –, cell Y iodine solution: +
Dcell X Benedict's solution: –, cell X iodine solution: +, cell Y Benedict's solution: +, cell Y iodine solution: –

✓ Correct answer

D: cell X Benedict's solution: –, cell X iodine solution: +, cell Y Benedict's solution: +, cell Y iodine solution: –

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Topic
Plant Nutrition, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source
O-Level Biology, Oct/Nov 2016 Paper 1 Variant 1, question 12.

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