Factors Affecting Photosynthesis


 
 
Concept Explanation
 

Factors Affecting Photosynthesis

Factor Affecting Photosynthesis:

The various factors affecting photosynthesis are light, carbon dioxide, water etc.

  • Light: Photosynthesis cannot occur in the dark and the source of light for the plants is sunlight. The longer the plant is exposed to light, the longer the process of photosynthesis will continue. As long as the temperature of the plant remains balanced, photosynthesis will occur.
  • Carbon Dioxide: The atmosphere contains 0.03% of carbon dioxide among other gases. Plants take in carbon dioxide from the air. The rate of photosynthesis increases on increasing the concentration of Carbon dioxide in the atmosphere.
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    Sample Questions
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    Question : 1

    Statement 1 : All green plants have chlorophyll pigment.                                                                          

    Statement 2 Without chlorophyll, photosynthesis cannot take place.                                      

    From the above statements, Anita concluded that the purple coloured Croton plants in her garden cannot prepare food on its own. Her teacher said this is not true. Why? 

    Right Option : C
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    Question : 2

        Which of the following are correct ?

        (a) The rate of photosynthesis increases on decreasing the concentration of carbon dioxide in the atmosphere.

        (b) Water is considered one of the most important factors affecting photosynthesis.

    Right Option : B
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    Question : 3

      The atmosphere contains _______________ of carbon dioxide among other gases?

    Right Option : C
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