In a root nodule, the gene coding for nitrogenase ________.

Question

Quizplus · Accepted Answer

The gene coding for nitrogenase is part of the Rhizobium genome, which is the bacterium that forms a symbiotic relationship with legume plants to facilitate nitrogen fixation within the root nodules. Option A is incorrect because leghemoglobin actually helps protect nitrogenase from oxygen damage. Option B is incorrect because active bacteroids within the nodule contain functional nitrogenase. Option C is incorrect because the gene is not located in the root hair cells, but in the nodules. Option D is incorrect because nitrogenase does not protect the nodule from nitrogen, but rather allows the plant to fix atmospheric nitrogen into ammonia for use as a nutrient.

In a Root Nodule, the Gene Coding for Nitrogenase ________