How do you prove co2 is esstential for photosynthesis?
Answers
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Answer:
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HERE IS UR ANS
Explanation:
MATERIALS REQUIRED
A destarched plant
conical flask
potassium hydroxide
PROCEDURE
Insert a part of the leaf of a destarched plant into a conical flask containing potassium hydroxide.
Potassium hydroxide solution absorbs the carbon dioxide gas from the air present in the glass bottle.
Leave the plant sunlight.
After few hours, perform a starch test to this and another leaf of the same plant.
OBSERVATION
Leaf not exposed to the KOH are bluish black.
Leaf exposed to KOH does not change to blue-black colour(where there is no carbon dioxide)
RESULT
Starch is present in the part of leaf where co2 is present
CONCLUSION
Presence of starch proves that carbon dioxide is necessary for photosynthesis as it traps sunlight.
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