Question

Choose the correct option for the identification and function of the blob-like structures seen on the roots of a plant as observed in the following image.

• A. Root nodules, Nitrogen fixation
• B. Root nodules, Parasites
• C. Root extensions, Increasing surface area for absorption
• D. Snails, Parasites

Answer 1

The correct option is A

Root nodules, Nitrogen fixation

Spherical blob-like structures are seen on the roots of leguminous plants. They are called root nodules and nitrogen-fixing bacteria such as rhizobium are found in these nodules. These bacteria fix atmospheric nitrogen and convert it into forms that the plant can use. The leguminous plants and the bacteria have a symbiotic relationship with each other.