It is necessary to discuss the background of nutrient transportation from the perspective of plant growth. Plants need to absorb water and nutrients from soil, but these nutrients must be transported through plant organs to supply the growth and development of plants. Plant organs include roots, stems and leaves. The structure and function of each organ are different in order to adapt to their nutrient transport tasks.

For example, the roots of plants are responsible for absorbing water and nutrients, and the root structure can be divided into two parts: root hair and root tip. Root hair is a fine structure with a large number of capillaries, which can absorb water and nutrients dissolved in water. The root tip is the growing point of the root, which can go deep into the soil to obtain more nutrients. In the structure of stems and leaves, plants transport nutrients through pipes, which are called vascular bundles. Vascular bundles can transport water and nutrients from roots to stems and leaves for photosynthesis and other physiological activities of plants.

In a word, the diversity of plant organ structure and function enables it to adapt to different nutrient transport tasks. These mechanisms are very important for plant growth and development, and also provide important background knowledge for us to understand the mechanism of plant growth.