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JAMB Biology 1990 Question 49

Question 49

Ecological Associations

What do bacteria in root nodules derive from the host plant?

  1. A.Protection and minerals
  2. B.Water and minerals
  3. C.Carbohydrates and water
  4. D.Protection and carbodydrates
Show the answer and explanation

Answer: D (Protection and carbodydrates)

Explanation

Rhizobium lives sheltered inside the nodule and gets sugars from the plant, while it gives the plant fixed nitrogen.