Meristems are actively dividing tissues of the plant. 6. Some of these cells, known as initials, maintain the meristem as a continuing source of new cells and may undergo mitosis (cell division) many times before differentiating into the specific cells required for that region of the plant body. It is the outer plant tissue and forms the epidermis. As a result, they form a permanent tissue. - cork cambium - sclerenchyma - xylem. Once a cell’s role is assigned though (just like when the computer is programmed), its function becomes limited. 6. 3. These are also known as homogenous tissues. Apical meristematic tissue: Apicalmeristematic tissue is located at the top of the root and stem and their branches. 2. The meristematic tissue is living and thin-walled. It protects the plants from any mechanical shocks. Tweet. The apical meristem (the growing tip) functions to trigger the growth of new cells in young seedlings at the tips of roots and shoots and forming buds. In the prometaphase, the nuclear membrane fully dissolves and proteins attach to the centromeres, which creates the kinetochores, and the chromosomes begin moving. Various cell divisions facilitate the growth of the cells in the roots and shoots. In plant biology, the term "meristematic tissue" refers to the living tissues containing undifferentiated cells that are the building blocks of all specialized plant structures. In the metaphase, the spindle fibers align all of the chromosomes along the middle of the cell's nucleus, and in the anaphase, the new nucleus will get one copy of each of the chromosomes. Types of meristematic tissue are apical meristem, Intercalary meristem, lateral meristem. This post describes the characteristic features of meristematic cells in plants. Prophase begins when the chromatin in the nucleus starts to condense and become visible, and the nucleolus then disappears. The new cell produced is transformed into mature permanent tissues. Meristematic tissue is like an unprogrammed computer–it is made of cells that haven’t been assigned a role within the plant, or undifferentiated cells. They have generally dense cytoplasm with prominent nucleus. The cells have no vacuoles and intercellular spaces. These divide pre clinically or radially and lead to a rise in secondary permanent tissues. The meristematic tissues heal the wounds of an injured plant. Pro Lite, CBSE Previous Year Question Paper for Class 10, CBSE Previous Year Question Paper for Class 12. What is the function of root hairs? It actively divides cells adding new cells to plant. Meristematic tissues have undifferentiated cells which form the building blocks of the specialized plant structures. The protoplasm of the cells is very dense. Sorry!, This page is not available for now to bookmark. If the food from a plant does not reach roots, which tissue do you think is damaged? Types of Tissue in Plants Meristematic Tissue. Meristematic tissue and ground tissue are two types of tissues found in plants. Meristematic tissue is commonly called as meristems. (v) They do not store reserve food material and are in an active state of metabolism. Procambium. The function of meristematic tissue is new growth. Simple permanent tissue is further classified into three types: Parenchyma. The primary function of meristematic tissue is to perform mitosis. The intercalary meristem and lateral meristem are the other two types of meristematic tissue. 3. Meristematic Tissue On the Basis of Function Protoderm. Meristematic cells divide, forming new cells that increase in size and differentiate, forming all plant tissues and organs. Meristematic tissue is made up of small cells that have thin walls and large nuclei. They possess a single, large and prominent nucleus. Meristematic tissues have small, thin walled cells that lack a central vacuole and have no specialized features. 1 ; View Full Answer Types of Meristems: I. The lateral meristem is how cambium wood is laid down for the annual increase is girth for dicot trees & shrubs. Plants grow in girth by the division of the lateral meristematic tissue. what happens once a cell takes on its specific role. The function of meristematic tissue is new growth. Functions of Meristematic tissue Depending on the position in the plant body, meristems are of the following three types. When a cell divides, the cell that started the division and remains in the meristem is called initial and the other one is called derivative. Types of meristematic tissues:- Apical Meristem:- It is present in the growing parts of the plant i.e. The meristem contains unspecialized cells called meristematic cells that continually divide, allowing the plant to grow. CEO Compensation and America's Growing Economic Divide. Apical meristems: These are responsible for growth in length of a plant. According to their origin, meristematic tissues are divided into primary and secondary. In this way, thin plants become thick. The meristematic tissue is generally found within the apices of the root systems and therefore the shoots are in a continuous state of division. Meristems form anew from other cells in injured tissues and are responsible for wound healing. Prev Article. They have generally dense cytoplasm with prominent nucleus. This process of taking up a permanent shape, size and a function is called cellular differentiation. Intercalary Meristem:- They are present at the base of the leaves or internodes of the twigs. Characteristics of Meristematic Tissues. The cells of the meristematic tissue are young and immature. Differentiated plant cells generally cannot divide or produce cells of a different type. It has the quality of self-renewal as every time the cell divides, one cell remains just like the parent cell and the others form specialized structures. Mitosis, the primary function of meristematic tissue, is the nuclear division of cells. 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