Question

What is the function of bacteria that live on the roots of bean plants?

Answer 1

The bacteria that live on the roots of bean plants convert nitrogen in atmosphere into amino acids which are utilized for the synthesis of proteins and other nitrogenous compounds.

Explanation:

The bacteria that live on the roots of bean plants are termed nitrogen fixing bacteria . These bacteria convert molecular nitrogen in atmosphere into nitrites and nitrates, which are converted into amino acids. This is termed biological nitrogen fixation.

These bacteria are beneficial to bean plants and in return these obtain nourishment from the roots. . These bacteria are thus termed symbiotic nitrogen fixing bacteria as both bacteria and plant are mutually beneficial to each other.

These bacteria multiply inside the roots of plant to form nodules. These roots are termed nodulated roots found in all leguminous plants like pea, gram, beans, etc.