Question

Explain the activity to show that carbon dioxide is necessary for photosynthesis.

Answer 1

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Experiment to prove the necessity ofcarbon dioxide in photosynthesis - definition. Insert a part of the leaf of a destarched plant into a conical flask containing potassium hydroxide. Potassium hydroxide solution absorbs thecarbon dioxide gas from the air present in the glass bottle.

Answer 2

Explanation:

photosynthesis following steps need to do

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 exposed to the atmosphere are bluish black.

Leaf exposed to KOH does not change to blue-black colour

Result- Starch is present in the green part of the leaf.

Conclusion- Presence of starch proves that chlorophyll is necessary for photosynthesis as it traps sunlight.

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To Show that Carbon dioxide is Necessary for Photosynthesis

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Experiment on Photosynthesis: Requirement of Carbon dioxide

Experiment on Photosynthesis: Requirement of Carbon dioxide

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