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The function of the bark in the stem is very important for plant life. In plants there are several parts that have their own functions. Often several parts of the system support each other in fulfilling their tasks. One part of the plant that plays an important role is the stem.
Also read: Properties of the epidermal tissue, the outer protective layer of the trunk
The main task of the stem is to support all the important parts of the plant. The branches of this plant stand upright to allow the leaves to reach sunlight during photosynthesis. Generally, plant parts that have a long, round shape like a cylinder have segments bounded by nodes.
Function of the cortex in stems, important for plants
This plant branch not only serves to support plants, but also has many other tasks. Another role is to act as a site for the passage of water from the fibrous roots to the leaves, to determine the arrangement of the leaves, and also to serve as a means of vegetative reproduction.
This part of the facility also consists of other parts. Part of the branch is the cortex.
The bark found in the stem of dicotyledonous plants is tissue whose structure consists of parenchyma cells. These parenchyma cells serve as ground tissue.
The cortex is divided into two parts, namely the outer part and the inner part. The outer part consists of collenchyma cells.
The collenchyma cells fuse with the parenchyma cells, forming a closed circle. This branch layer, which consists of parenchymal tissue with chloroplasts, has thin-walled and irregularly arranged cells with fairly large cell spaces.
Some grass species have sclerenchyma tissue as the stem bark. Plants such as pines or conifers, on the other hand, generally do not have any reinforcing tissue.
Cortex for growth
The function of the bark in the trunk is to better support its growth. This part of the plant is known to play a role in storing food reserves.
In this part, food reserves are stored in the form of energy in the form of starch. This role is found in plants such as sago palms and sugarcane.
In addition, this part of the system also serves as an air storage facility. For example, lotus plants have relatively thin parenchyma tissue and a small amount of reinforcing tissue.
The cells in the parenchyma tissue have spaces between the cells. The bark also acts as a storage location for water in plants.
Also read: Function of cork tissue and its important properties for plants
This role occurs in cactus plants, which generally grow in dry areas. This part of the plant helps the cactus store water for its growth process.
In addition, part of the stem also plays a role in nutrient transport. Nutrient transport begins from the epidermis to the root core.
Supporting plant survival
The function of the bark in the stem is also directly to support the survival of the plant. This is evident from the role of this part, namely storing food reserves, storing water and storing air.
Food reserves certainly play an important role in plant nutrition. When plants meet their nutritional needs well, they have a great chance of continuing to grow and develop.
Likewise, an insufficient supply of food to plants can lead to them not developing optimally. The bark is also important because it plays a role as a water reservoir in plants such as cacti. Water is also important for the survival of all plants.
Tissue by cortex
Plants are composed of vascular tissue with a central cylinder. In dicotyledonous plants, the cylinder is located in the bark or within the endodermis.
Then the outermost layer is often called the pericambium or pericycle. The inner part consists of pith and transport bundles.
This part of the transport bundle contains phloem and xylem. Then there is a mark in the middle of the cylinder or stele. Then pith can also be found between the phloem and xylem.
This part is shaped like a finger or medullary finger. In addition, xylem and phloem also have cambium. Therefore, the transport file is an open companion file.
Also read: Function of the cambium in dicot stems in the formation of annual rings
These are some of the functions of the bark in the trunk that are important for the survival of the plant. This part of the plant stem not only serves as a storage place for food reserves, but also has many other tasks. This role maximizes plant survival. (R10/HR Online)
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