Search SchoolNGR

Friday, 03 April 2026
Register . Login

Bacteria inhabiting legume root nodules and which add atmospheric nitrogen to the soil ...

Bacteria inhabiting legume root nodules and which add atmospheric nitrogen to the soil are referred to as
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
  • A Denitrifying bacteria
  • B Nitrifying bacteria
  • C Nitrogen fixing bacteria
  • D Nitrogen freeing bacteria
  • E Nitrogen putrefying bacteria
Correct Answer: Option C
Explanation:
Nitrogen-fixing bacteria are the type of bacteria that inhabit the root nodules of legumes (such as peas, beans, and clover) and convert atmospheric nitrogen (Nā‚‚) into a form (usually ammonia) that plants can use for growth. These bacteria form a symbiotic relationship with the plants, providing them with nitrogen while receiving carbohydrates from the plant.

Here’s a breakdown of the other options:

A. Denitrifying bacteria – These bacteria convert nitrates in the soil back into nitrogen gas, which is released into the atmosphere.

B. Nitrifying bacteria – These bacteria convert ammonia into nitrites and then nitrites into nitrates, which plants can use.

D. Nitrogen freeing bacteria – This term is not commonly used in this context.

E. Nitrogen putrefying bacteria – This is not a correct term for any known bacterial group related to nitrogen cycling.

Share question on: