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The reactions of photosynthesis make up a biochemical pathway. What is the end product of light and dark reactions of photosynthesis? - Science

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प्रश्न

The reactions of photosynthesis make up a biochemical pathway.

What is the end product of light and dark reactions of photosynthesis?

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उत्तर

The reaction of photosynthesis can be grouped into two: Light and Dark reactions.

The reaction involving pigments, solar energy, and water that produce ATP and NADPH2 is called a light reaction.
The photosynthetic reactions in which CO2 is reduced to carbohydrates making use of ATP and NADPH2 generated by light reaction are called dark reaction.

The overall reaction of photosynthesis can be written as follows:

\[\ce{CO2 + H2O ->[Solar energy][chlorophyll]C6H12O6 + H2 + O2↑}\]

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Process of Photosynthesis
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अध्याय 12: Plant Anatomy and Plant Physiology - Evaluation [पृष्ठ १८५]

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सामाचीर कलवी Science [English] Class 10 SSLC TN Board
अध्याय 12 Plant Anatomy and Plant Physiology
Evaluation | Q VIII. 1. A) | पृष्ठ १८५

संबंधित प्रश्न

State the main function of the Lenticels


Put a tick (✓ ) against the most appropriate alternative in the following statement. 

Stomata are present on the surface of:


Short answer question.

What is the source of energy for photosynthesis?


Identify the false statements and rewrite them correctly by changing the first or last word only.

Starch produced in a leaf remains stored in it for 2-3 weeks before it is used by other parts of the plant.


On a bright sunny day, water weeds growing in an aquarium were actively giving off bubbles of gas. Use this information to answer questions that follow:

  1. Name the process occurring in the water weed that has resulted in the evolution of these bubbles.
  2. Of what gas do these bubbles consist?
  3. Briefly describe the reactions occurring in the leaves of the water weeds leading to the evolution of these bubbles.
  4. Give an overall balanced chemical equation to represent the process named in (i) above.

What is meant by a destarched plant? How can it be destarched?


A candidate in order to study the importance of certain factors in photosynthesis took a potted plant and kept it in the dark for over 24 hours. Then in the early hours of the morning, she covered one of the leaves with black paper in the center only. She placed the potted plant in the sunlight for a few hours, and then tested the leaf which was covered with black paper for starch.

  1. What aspect of photosynthesis was being investigated?
  2. Is there any control in this experiment? If so, state the same.
  3. Why was the plant kept in the dark before the experiment?
  4. Describe step by step how the candidate proceeded to test the leaf for the presence of starch.

Name the following:

In-plant cells, carbohydrates are stored in which form.


The reactions of photosynthesis make up a biochemical pathway.

Explain how the biochemical pathway of photosynthesis recycles many of its own reactions and identify the recycled reactants.


Name four essentials for photosynthesis.


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