English Dictionary

root nodule

noun

(botany) A lump found on the roots of some plants, primarily legumes, that forms a symbiosis with nitrogen-fixing bacteria known as rhizobia, allowing the plant to obtain nitrogen directly from the atmosphere, which most plants cannot do.

The root nodule is an important feature of leguminous plants.

意味（1）

(botany) A lump found on the roots of some plants, primarily legumes, that forms a symbiosis with nitrogen-fixing bacteria known as rhizobia, allowing the plant to obtain nitrogen directly from the atmosphere, which most plants cannot do.