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प्रश्न
Do reactions of photosynthesis called, as ‘Dark Reaction’ need light? Explain.
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उत्तर
ATP and NADPH are used to drive the processes leading to the synthesis of food, more accurately, sugars. This is the biosynthetic phase or dark reaction of photosynthesis. This process does not directly depend on the presence of light but is dependent on the products of the light reaction, i.e., ATP and NADPH, besides CO2 and H2O.
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संबंधित प्रश्न
Consider an experiment, where thylakoids are removed and kept in a culture medium. The medium is supplemented with all the requisites of photosynthesis, i.e. \[\ce{CO2}\], \[\ce{H2O}\]. The setup is exposed to light. Hexose sugar is not formed as the end product.
Choose the option that justifies the above result.
Which of the following is the site of photolysis of water?
Grana refer to ______.
Which light range is least effective in photosynthesis?
During light reaction in photosynthesis the following are formed ______.
The correct sequence of flow of electrons in the light reaction is ______.
Does moonlight support photosynthesis?
Which products formed during the light reaction of photosynthesis are used to drive the dark reaction?
Is it correct to say that photosynthesis occurs only in leaves of a plant? Besides leaves, what are the other parts that may be capable of carrying out photosynthesis? Justify.
The entire process of photosynthesis consists of a number of reactions. Where in the cell do these take place?
Synthesis of ATP and NADPH ______
The entire process of photosynthesis consists of a number of reactions. Where in the cell do these take place?
Synthesis of sugar molecule ______
The entire process of photosynthesis consists of a number of reactions. Where in the cell do these take place?
Synthesis of starch ______
Which property of the pigment is responsible for its ability to initiate the process of photosynthesis? Why is the rate of photosynthesis higher in the red and blue regions of the spectrum of light?
In the figure given below, the black line (upper) indicates action spectrum for photosynthesis and the lighter line (lower) indicates the absorption spectrum of chlorophyll a. Answer the following:
- What does the action spectrum indicate? How can we plot an action spectrum?
- How can we derive an absorption spectrum for any substance?
