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WAEC Agricultural Science 2007 Question 54

Question 54

Fisheries and Aquaculture

Fertilizing a fish pond with compost manure would most likely

  1. A.decrease phytoplankton population and decrease fish yield
  2. B.decrease phytoplankton population and increase fish yield
  3. C.increase phytoplankton population and decrease fish yield
  4. D.increase phytoplankton population and increase fish yield.
Show the answer and explanation

Answer: D (increase phytoplankton population and increase fish yield.)

Explanation

Manure feeds plankton, which feed the fish.