Question

Отличие разрезов стебля и коры дерева

Answer 1

Ответ:

Разрез стебля показывает его внутреннюю структуру и состоит из двух частей: медуллы и ксилемы.

Answer 2

Difference between stem and bark of a tree

The stem and bark are two distinct parts of a tree with different functions and characteristics.

Stem: - The stem, also known as the trunk, is the main structural part of a tree that supports the branches, leaves, and reproductive structures. - It is composed of several layers, including the outer bark, inner bark (phloem), cambium, sapwood (xylem), and heartwood. - The stem provides mechanical support, transports water and nutrients, and stores reserves of carbohydrates and other substances. - The stem grows in length through the activity of the apical meristem at the tip and lateral meristems in the cambium layer, which produce new cells for both height and girth growth. - The stem is typically rigid and woody, providing structural support to the tree.

Bark: - The bark is the protective outer covering of the stem and branches of a tree. - It is composed of several layers, including the outermost cork layer, the phloem layer, and the innermost cambium layer. - The bark protects the underlying tissues from physical damage, pathogens, and extreme temperatures. - It also helps regulate the exchange of gases and water vapor between the tree and its environment. - The outer bark layer is often rough and can vary in texture, color, and thickness depending on the tree species. - The inner bark (phloem) is responsible for transporting sugars and other organic compounds produced by the leaves to other parts of the tree.

In summary, the stem is the main structural part of a tree, responsible for support and transport, while the bark is the protective outer covering of the stem and branches.