Question

How you proved that carbon dioxide is necessary for photosynthesis? ​

Answer 1

Aim: To show that carbon dioxide is necessary for photosynthesis

Procedure:

Take a plant with destarched leaves.

Insert one of its leaves in a conical flask containing potassium hydroxide.

Leave the plant in sunlight.

After a few hours, test the particular leaf and some other leaf of the same plant for the presence of starch.

Observation:

 

The leaf which was inserted in the conical flask stains brown, and the other leaf which is exposed to sunlight turns blue-black.

Inference:

Potassium hydroxide in the flask absorbs carbon dioxide; thus, due to the absence of CO2, the leaf fails to produce starch which proves that carbon dioxide is necessary for photosynthesis.

Answer 2

Hey mate

Here is your answer

Potassium hydroxide in the flask absorbs carbon dioxide; thus, due to the absence of CO2, the leaf fails to produce starch which proves that carbon dioxide is necessary for photosynthesis.