nốt rễ

Thân thiện

Khi nhổ cây lạc lên, chúng ta có thể thấy những nốt rễ nhỏ màu hồng bám trên rễ.

Definition

1. Noun:
   • Nodosity (in botany): A small, round, or irregular swelling or knot, typically on the roots of certain plants, especially legumes. These structures are formed due to a symbiotic relationship with nitrogen-fixing bacteria (rhizobia).
   • Root nodule: The more common biological term for this structure, which is a specialized outgrowth on plant roots containing nitrogen-fixing bacteria.

Usage Examples

• Noun:
  • Cây họ đậu thường có nhiều nốt rễ chứa vi khuẩn cố định đạm. (Legume plants often have many root nodules containing nitrogen-fixing bacteria.)
  • Các nhà khoa học đang nghiên cứu sự hình thành của nốt rễ. (Scientists are studying the formation of nodosities.)

Advanced Usage

• "Vi khuẩn nốt rễ" (Rhizobium bacteria): Refers specifically to the bacteria that live symbiotically within root nodules.
  • Vi khuẩn nốt rễ giúp cây trồng hấp thụ nitơ từ khí quyển. (Rhizobium bacteria help plants absorb nitrogen from the atmosphere.)

Variants and Related Words

• Nốt (Noun): A general term for a nodule, spot, or note (in music). Can refer to various small, localized structures or marks.
• Củ (Noun): A tuber or bulb. While also a root structure, it is different from a , as it is typically for storage (e.g., potato, carrot).
• U (Noun): A tumor or lump. This refers to an abnormal growth, which is pathological, unlike the beneficial and normal .

Synonyms

• Nốt sần (ở rễ): Root nodule (a more descriptive synonym).
• Hạch rễ: Root tubercle (a less common synonym with a similar meaning).

Related Phrases

• Cây có nốt rễ: Nodulated plant (a plant that forms root nodules).
• Sự cố định đạm của nốt rễ: Nitrogen fixation by root nodules.

Related Idioms

(This is a specific scientific term, so there are no common idioms associated with it.)

Học thuật

1. (thực vật) Nodosity