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Chapter: Biology: Physiological Activities in Plants Nutrition

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Experiment to show that photosynthesis do not occur without chlorophyll

Requirements: A Variegated leaf of an Ornamental plant, Alcohol, Iodine solution, and a Beaker.

Experiment to show that photosynthesis do not occur without chlorophyll:

 

Requirements: A Variegated leaf of an Ornamental plant, Alcohol, Iodine solution, and a Beaker.

Observation: After immersing in the Iodine solution it will be seen that onlythe green portion of the leaf become blue (deep violet or black).

 

Conclusion: Due to presence of chlorophyll only the green portionsmanufactured carbohydrate by photosynthesis. Having no chlorophyll orange or yellow regions did not manufacture carbohydrate. As there was carbohydrates in green portion, that portion become blue (deep violet or black).

 

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