Question

For what reason is the leguminous soil is beneficial?

• A. Deer won't eat them.
• B. They are photosynthetic.
• C. They have nitrogen-fixing bacteria on their roots.
• D. Animals convert them to energy.
• E. None of the above.

Answer 1

The correct option is C They have nitrogen-fixing bacteria on their roots.

Leguminous plants have nodulated roots in which Rhizobium is present. These bacteria possess nitrogenase enzyme for fixing nitrogen. This results in an increase in the concentration of nitrogen-fixing bacteria in the soil. This soil is rich in nitrogen and allows growth of plant more efficiently.

Thus, the correct answer is option 'They have nitrogen-fixing bacteria on their roots'.