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Light energy is converted into chemical energy in photosynthesis in the form of

  • (a) glucose only Your answer
  • (b) starch only Your answer
  • (c) CO2 and water Your answer
  • (d) ATP and NADPH Correct
Your answer: Correct answer: (d)
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Explanation

Why (d) is correct

In the light reaction, light energy is first converted into the chemical energy of ATP and NADPH. These are then used to make sugars.

Why the other options are wrong

  • (a) · your answer Glucose is made later, in the Calvin cycle.
  • (b) · your answer Starch is a storage form made from sugars, not the first form of chemical energy.
  • (c) · your answer CO2 and water are raw materials, not stores of energy.
NCERT point: ATP and NADPH = assimilatory power.
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