Root hair
Root Hair
Root hair (/ruːt hɛər/), also known as rhizoid, is a thin, tubular outgrowth from a root of a vascular plant.
Etymology
The term "root hair" is derived from the Latin words "radix" (root) and "capillus" (hair).
Definition
Root hairs are specialized cells located just behind the root tip that aid in water and nutrient absorption. They are an important part of the root system and play a crucial role in the overall health and growth of the plant.
Function
Root hairs increase the surface area of the root, allowing it to absorb more water and nutrients from the soil. They also help to anchor the plant in the ground.
Structure
Root hairs are single cells and are part of the root epidermis. They are typically long and thin so they can penetrate between soil particles, and they have a large surface area for absorption of water and minerals.
Related Terms
- Root: The part of a plant that typically lies below the surface of the soil.
- Epidermis: The outermost layer of cells covering the plant.
- Cell: The basic structural and functional unit of all known living organisms.
- Vascular plant: Plants with a system to conduct nutrients and water.
External links
- Medical encyclopedia article on Root hair
- Wikipedia's article - Root hair
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