Question:

Which one is the correct summary equation of photosynthesis?

Updated On: Aug 1, 2023

$\ce{C6H12O6 + 6O2-> 6CO2 + 6H2O + energy}$
$\ce{C6H12O6 + 6O2 + 6H2O -> 6CO2 + 12H2O + energy}$
$\ce{6CO2 + 6H2O -> 6H2O + C6H12O6}$
$\ce{6CO2 + 12H2O ->[Light][Chlorophyll] 6O2 + C6H12O6 + 6H2O}$

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The Correct Option is D

Approach Solution - 1

Answer (d) $ {6CO2 + 12H2O ->[Light][Chlorophyll] 6O2 + C6H12O6 + 6H2O}$

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Approach Solution -2

In this equation, CO2 and H2O are the reactants.

CO2 is present in the atmosphere, they are taken in by the plants with the help of stomata and other specialised structures.

H2O is absorbed by the roots from the soil and then it will be transported to the leaves, so that they can contribute to the photosynthesis.

The process of photosynthesis takes place in the presence of sunlight and chlorophyll.

Now, Glucose, oxygen and water are the products.

Glucose is a sugar and is the key product of photosynthesis. They act as a primary source of fuel for the cellular process that takes place in the plants. Glucose produced is stored in the form of starch.

Oxygen and water are the by-products.

During the process of photosynthesis, carbon dioxide will get oxidised in order to make glucose, and the water will be reduced to form oxygen.

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Notes on Photosynthesis in higher plants

Concepts Used:

Photosynthesis in Higher Plants

Processes Of Photosynthesis in Higher Plants:

Photosynthesis in higher plants involves the following processes:

Light Reaction
Dark Reaction

Light Reaction:

This phenomenon occurs in the presence of light.
The pigment absorbs light and produces energy in the form of ATP.
The process involves- absorption of light, water splitting, the release of oxygen, and formation of ATP and NADPH.

Dark Reaction:

This process occurs in the absence of light in the stroma of the chloroplasts. The following cycles are involved in the process:

Calvin Cycle (C3 Cycle)
C4 Cycle (Hatch and Slack Pathway)