WAEC Agricultural Science 1988 Question 15

Question 15

Agricultural Ecology

The relationship between the microorganisms and plants in the nitrogen cycle is best described as

  1. A.parasitism
  2. B.commensalism
  3. C.competition
  4. D.symbiosis
  5. E.saprophytism
Show the answer and explanation

Answer: D (symbiosis)

Explanation

Rhizobium in legume root nodules gets food from the plant and fixes nitrogen for it, so both benefit (symbiosis).