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3 marksPhotosynthesis and Energy Flow

CSEC Human and Social Biology · January 2010 · Paper 2 · Question 2(a)(i)

Plants manufacture sugars by the process of photosynthesis.

Complete the word equation for photosynthesis: [blank] + [blank] --(light / chlorophyll)--> sugar + [blank].

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Other parts of this question

  1. 2(a)(ii)In what form, starch or glycogen, is sugar stored in plants?[1 mark]
  2. 2(b)(i)Identify ONE plant food rich in carbohydrates and ONE plant food rich in proteins.[2 marks]
  3. 2(b)(ii)Suggest ONE way the human body uses carbohydrate and ONE way it uses protein.[2 marks]
  4. 2(c)Suggest TWO ways by which human beings return carbon dioxide to the atmosphere.[2 marks]

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