Question

Statement 1: Root nodules provide shelter to certain bacteria.

Statement 2: Certain bacteria present in root nodules helps in fixing nitrogen for the plant.

• A. Only statement 1 is correct.
• B. Only statement 2 is correct.
• C. Both the statements are correct.
• D. Both the statements are incorrect.

Answer 1

The correct option is C Both the statements are correct.

Root nodules are mostly present in the leguminous plants like pulses, beans, soyabeans, etc. These nodules provide shelter to certain bacteria, $Rhizobium$. In return, these bacteria fix the atmospheric nitrogen for the plant, since plants cannot use the atmospheric nitrogen directly. This type of association where both plant and bacteria are mutually benefited is called symbiosis.