The Vital Role of Soil in Plant Growth

What is the main function of soil in plant growth?

A. Provides structural support
B. Facilitates water and nutrient supply
C. Acts as a protective barrier

Answer:

B. Facilitates water and nutrient supply

Soil plays a crucial role in plant growth by facilitating water and nutrient supply. Without soil, plants would struggle to access the essential minerals and organic compounds they need to grow and thrive. The composition of soil, including its organic matter and mineral nutrients, directly impacts the health and development of plants.

When plants are rooted in soil, they can absorb water and nutrients from the soil through their roots. Soil acts as a reservoir for water, ensuring plants have a consistent supply even in times of drought. Additionally, soil contains vital mineral nutrients like nitrogen, potassium, and phosphorus that are essential for plant growth.

Therefore, the main function of soil in plant growth is to facilitate the supply of water and nutrients, enabling plants to absorb the necessary resources for their development and survival.

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