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WAEC Agricultural Science 2001 Question 52

Question 52

Fisheries and Aquaculture

Which of the following is not true about adding organic manure to a fish pond? It

  1. A.reduces the pH of water considerably
  2. B.accelerates the growth of planktons
  3. C.leads to water pollution
  4. D.leads to the depletion of oxygen
Show the answer and explanation

Answer: A (reduces the pH of water considerably)

Explanation

Manure feeds plankton; too much pollutes and uses oxygen, but it does not greatly lower pH.