Question

What phenomenon does this experiment demonstrates?if a plant is covered with a transparent polythene bag and is placed under sunlight for 1 hr?

Answer 1

Answer: When a plant is covered and tied over a plastic bag, the plant eventually dies due to depletion of starch. Explanation: The plant requires carbon dioxide and water to produce food in the pigment presence of sunlight, through the process of photosynthesis with the help of chlorophyll.

Answer 2

This experiment demonstrates that $CO^{2}$ is necessary for photosynthesis.

In the experiment, even though the plant has sunlight for photosynthesis, the lack of $CO^{2}$ caused lack of glucose(food) making the plant droop down and possibly die.

This proves that $CO^{2}$ is necessary for formation of glucose.

$6CO^{2} + 6H_{2}O = C_{6}H_{12}O_{6} + 6O_{2}$

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