Szárról

"Szárról" is a Hungarian word that translates to "stem" in English. It refers to the main structural axis of a vascular plant, supporting leaves, flowers, and fruits. Stems are crucial for the plant's survival, serving multiple functions.

One primary role of the stem is support. It elevates the leaves towards sunlight, maximizing photosynthesis, and positions flowers and fruits for effective dispersal. Stems also transport water and minerals from the roots to the rest of the plant through specialized tissues called xylem. Conversely, they move sugars produced during photosynthesis from the leaves to other parts of the plant, such as the roots, for storage or energy use, via phloem.

Stems can be adapted for various purposes. Some stems are modified for storage, like the tubers of potatoes or the bulbs of onions, accumulating nutrients. Others are adapted for vegetative reproduction, forming runners or rhizomes from which new plants can grow. Climbing plants often have tendrils or twining stems that allow them to ascend other structures. The external appearance of stems varies greatly, from the woody trunks of trees to the soft, herbaceous stalks of annual plants. Their surface can be smooth, hairy, spiny, or ridged, depending on the species and its environment.