Describe an experiment to prove that carbon dioxide is essential for the process of photosynthesis. ??
Answers
Answer:
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Explanation:
Experiment showing that carbon dioxide is essential for photosynthesis is explained below:
Materials required: A potted plant, wide mouthed bottle, a cork, potassium hydroxide solution.
Procedure:-
(i) Take a potted plant with elongated leaves which have been destarched by keeping the plant in dark for three to four days.
(ii) Take an empty bottle and put a little amount of potassium hydroxide (KOH) in it.
(iii) Now cut the cork of the bottle into two parts and place it on one of the leaves of the potted plant in between the two parts of the cork.
(iv) Now put the bottle in the presence of sunlight for about 72 – 96 hours.
(v) Now test the leaf for the presence of starch.
You will observe that the part of the leave exposed to the sun light and atmospheric air became bluish- black and the one inside the bottle containing potassium hydroxide which absorbs carbon dioxide in the bottle remained colourless.
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