Question

Rhizobium is a nitrogen-fixing bacteria found in the roots of (i)______ and have a (ii)_______ relationship with them.

• A. (i) all plants (ii) saprophytic
• B. (i) pulses (ii) symbiotic
• C. (i) mango (ii) parasitic
• D. (i) mango (ii) symbiotic

Answer 1

The correct option is B

(i) pulses

(ii) symbiotic

Rhizobium is a nitrogen-fixing bacteria found in the root nodules of pulses like peas, green gram etc. The bacteria fix atmospheric nitrogen and provide it to the plants to absorb. In return, the plants provide shelter and nutrition to the bacteria. This kind of mutually beneficial relationship is called a symbiotic relationship.