The previous test was: testing a onion bulb for sugar...there is none (i'm not sure if this relates to the question)
Why did we test for starch instead of sugar (on a pelargonium or hibiscus leaf)?
Excellent question chap. The plant transfers the glucose into something else fairly quickly - in fact as soon as it's made. Everything in the plant - oil, protein, and polysaccharides is made from glucose, plus a few nitrates and minerals. The starch will be distributed just about anywhere there are chloroplasts. As for testing an onion bulb for sugar - onions have nearly as much sugar as fruit juice - not sure why you didn't find it. What sugar did you test for? What test did you use?
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