Give a long answer to the question given below:
Design an experiment to demonstrate that carbn dioxide is essential for photosynthesis. Write the observation and conclusion of the experiment.
Aim:
To determine the importance of carbon dioxide in photosynthesis.
Procedure:
a. Which chemical is used in the experiment to absorb carbon dioxide from the air?
b. Which reagent is used to test for the presence of starch in the leaves?
Observation:
c. Why did the leaf of the plant not placed near potassium hydroxide turn blue-black?
d. What is the role of carbon dioxide in this experiment?
Inference:
From the observation, we can conclude that potassium hydroxide absorbs all the carbon dioxide. As a result, the leaf failed to produce in the absence of \(CO_2\), demonstrating that \(CO_2\) is necessary for photosynthesis.