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The raw materials of photosynthesis are

  • (a) glucose and O2 Your answer
  • (b) chlorophyll and light Your answer
  • (c) CO2 and H2O Correct
  • (d) starch and water Your answer
Your answer: Correct answer: (c)
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Explanation

Why (c) is correct

The raw materials of photosynthesis are carbon dioxide and water. Light and chlorophyll are conditions needed, not raw materials.

Why the other options are wrong

  • (a) · your answer Glucose and O2 are products of photosynthesis.
  • (b) · your answer Chlorophyll and light are needed, but they are not used up as raw materials.
  • (d) · your answer Starch is a product (stored form of sugar).
NCERT point: CO2 + H2O → carbohydrate + O2, in the presence of light and chlorophyll.
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