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WAEC Biology 1995 Question 29

Question 29

Photosynthesis and Plant Nutrition

At the end of photosynthesis, the green leaf is tested for starch and not glucose, because

  1. A.the glucose is used up immediately to provide energy for the needs of the leaf
  2. B.the glucose formed is immediately converted to starch
  3. C.starch is stored only in leaves
  4. D.there are no chemicals for glucose test in leaves
  5. E.it is easy to test for starch
Show the answer and explanation

Answer: B (the glucose formed is immediately converted to starch)

Explanation

Glucose made in the leaf is quickly turned into starch for storage, so starch is the product we can detect.