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JAMB Biology 1997 Question 38

Question 38

Population Ecology

After a heavy rainfall and the formation of a large pond, the most likely sequence of changes in the vegetation of the pond is

  1. A.Euglena ← water lily ← Spirogyra ← grass
  2. B.water lily ← Spirogyra ← grass ← Euglena
  3. C.Spirogyra ← Euglena ← grass ← water lily
  4. D.Euglena ← Spirogyra ← water lily ← grass.
Show the answer and explanation

Answer: D (Euglena ← Spirogyra ← water lily ← grass.)

Explanation

Simple microscopic algae colonise first, then filamentous algae, then rooted floating plants like water lily, and finally land plants such as grass as the pond silts up.