Why is sunlight necessary for photosynthesis?

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Solution

Sunlight is necessary for photosynthesis, the sun provides the initial energy that starts the cycle of photosynthesis The energy from the light causes a chemical reaction that breaks down the molecules of carbon dioxide and water and reorganizes them to make the sugar (glucose) and oxygen gas.

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Similar questions

Q. (a) Define 'Photosynthesis'. Apart from sunlight, what other conditions are necessary for the process of photosynthesis.
(b) Describe an experiment to show that "sunlight is essential for photosynthesis".

Q. On completion of the experiment to demonstrate that ‘Light is necessary for photosynthesis’, four students reported the inference as follows. Identify the correct inference:
(1) Part of the leaf covered with strip can only undergo photosynthesis.
(2) Uncovered part of the leaf cannot synthesise starch
(3) Photosynthesis takes place only in the presence of sunlight
(4) Light is necessary for the synthesis of starch in green plants.

Q. (i) Define dark reaction.
(ii) Give an overall balanced equation of this process
(iii) Describe an experiment to prove that sunlight is necessary for photosynthesis.
(iv) Mention any two points in which photosynthesis and respiration in plants are opposite to each other.

In the experiment to prove chlorophyll is necessary for photosynthesis- Q1 Why is a variegated leaf used? Q2 Why is the variegated leaves kept in a dark room for 3 day and then kept in sunlight for 6 hours?

before starting an experiment, to show that light is necessary for photosynthesis, it is necessary to destarch the plant. why?

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