Question

Какую функцию выполняет корневой волосок?

Answer 1

Корневой волосок выполняет много важных функций, основной из которых является высасывание питательных веществ из воды.

Answer 2

Он всасывает воду, питая корень.

Answer 3

Function of the Root Hair

The root hair is a specialized structure found in the roots of plants. It serves several important functions in the absorption of water and nutrients from the soil. Here are the key functions of the root hair:

1. Increase Surface Area: The primary function of the root hair is to increase the surface area of the root system. The root hair is a thin, elongated projection that extends from the surface of the root. This structure greatly increases the surface area available for absorption, allowing the plant to efficiently take up water and nutrients from the soil.

2. Absorption of Water: The root hair plays a crucial role in the absorption of water from the soil. As water moves through the soil, it enters the root hair cells through osmosis. The large surface area of the root hair increases the chances of water molecules coming into contact with the root surface, facilitating their absorption.

3. Absorption of Nutrients: In addition to water, the root hair is responsible for the absorption of essential nutrients from the soil. These nutrients include minerals such as nitrogen, phosphorus, and potassium, which are necessary for plant growth and development. The root hair cells have specialized transport proteins that facilitate the uptake of these nutrients.

4. Exchange of Gases: The root hair also plays a role in the exchange of gases between the plant and the soil. Oxygen is required for the respiration of root cells, while carbon dioxide is released as a byproduct. The root hair allows for the exchange of these gases, ensuring the proper functioning of the root system.

5. Anchorage and Support: The root hair helps anchor the plant in the soil and provides support. The elongated structure of the root hair increases the contact area between the root and the soil particles, enhancing stability and preventing the plant from being easily uprooted.

In summary, the root hair serves essential functions in the absorption of water and nutrients, gas exchange, and anchorage of plants in the soil. Its elongated structure and large surface area contribute to the efficient uptake of water and nutrients, supporting the growth and development of plants.