Photosynthesis

Lab Report: Photosynthesis Aim: To find out if recognize fire is needed for photosynthesis. Hypothesis: I predict that the sweet-scented folio exit influence filthy after(prenominal) we furnish single on it, and the leaf that was kept in the nighttime will have a less number of scorch spots. hypothetic background: Light is one of the main factors of photosynthesis. I complete that one of the products of photosynthesis is glucose, or starch. The leaf that was put in the olive-drab doesnt contain starch. Therefore, when ace is applied, it will non turn black.

Equipment: * 2 leaves1 leaf kept in the drab for 24 hour s, and the other exposed for 24 hours * Beaker * water tap water * etna Burner * Forceps * 2 Test Tubes * Methanol To suppress chlorophyll * Iodine Solution * Lighter * guard gape * Gloves * Stopwatch Dependant Variable: Presence of starch after iodine is added Independent Variable: Plants exposure Controlled Variable: * heap of iodine, water, and methanol * The fourth dimension the leaf was put in the water; 1 minute, the while the leaf was put in the methanol; 10 minutes result: * Fill the beaker up with tap water * Light up the etna burner exploitation the lighter * regurgitate the beaker on top of the bunsen burner burners mat until the water begins to boil * Put in the 2 leaves in the beaker while the water is boiling for a in all minute * expunge out the leaves * Fill 2 study tubes with methanol * Put in a leaf in each test tube * Put the test tube s in the beaker of hot water while the Bunse! n burner is turned aside * After 10 minutes, take out the leaves, wash them, and prevail iodine solution on them * Wait for some 5 minutes until the iodine stains the leaves, and observe Results/observations: Leaf in the dark: Didnt have black spots/very rare familiar Leaf: Turned black/filled with black spots proof: By looking at my results, I proved that my conjecture was right; the leaf that was kept in the dark didnt turn...If you want to get a all-encompassing essay, order it on our website: BestEssayCheap.com

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