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WAEC Biology 2014 Question 26

Question 26

Nutrient Cycling

The part of a leguminous plant where bacteria like Azotobacter can be found is

  1. A.at the nodes of the stem.
  2. B.at the internodes.
  3. C.in the root nodules.
  4. D.in the spongy mesophyll.
Show the answer and explanation

Answer: C (in the root nodules.)

Explanation

Nitrogen-fixing bacteria associated with legumes live in the root nodules (strictly, the nodule bacterium is Rhizobium; Azotobacter lives free in the soil).