What Does Meristematic Tissue Mean?

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 essence, the cells within the meristematic tissues are what allow a plant to increase its length and girth.


Where are meristems found? Meristems are classified by their location in the plant as apical (located at root and shoot tips), lateral (in the vascular and cork cambia), and intercalary (at internodes, or stem regions between the places at which leaves attach, and leaf bases, especially of certain monocotyledons—e.g., grasses).

what does meristematic tissue contain?

Meristem tissue and plant development These tissues in a plant consist of small, densely packed cells that can keep dividing to form new cells. Meristematic tissue is characterized by small cells, thin cell walls, large cell nuclei, absent or small vacuoles, and no intercellular spaces.

What is simple tissue? Simple tissues are tissues composed of cells that are structurally and functionally similar i.e. they are made up of only one type of cell. Types of simple tissues in plants: i. Parenchyma.

what is meristematic tissue and its functions?

The primary function of meristematic tissue is to perform mitosis. Meristematic tissues have small, thin walled cells that lack a central vacuole and have no specialized features. Meristematic tissue is made up of small cells that have thin walls and large nuclei. The cells have no vacuoles and intercellular spaces.

Where is intercalary meristematic tissue found? Intercalary Meristems – The intercalary meristems are located at the internodes or the base of the leaves. The intercalary meristems help in increasing the length of the internode. This is usually seen in monocotyledonous plants.

what are Meristematic tissues Class 9?

MERISTEMATIC TISSUE These are living tissues which are composed of immature cells that are capable of division throughout life. These tissues are found in growing regions of plants. Cells have a thin cell wall.

Why is meristem tissue important? Plants develop new organs (stems, leaves, flowers, roots) via cell division and cell differentiation. Because the source of all new cells in a plant is the meristem, this tissue plays an important role in organ development as well.

What is meristematic tissue culture?

Meristem culture involves culturing of differentiated cells; whereas callus culture involves culturing of undifferentiated cells. A meristem consists of actively dividing cells. Meristem culture mainly involves culturing a bud in culture medium under aseptic conditions.

What is intercalary meristematic tissue? Definition of intercalary meristem. : a meristem developing between regions of mature or permanent tissue (as at the base of the grass leaf) — compare apical meristem, lateral meristem.

What is tissue class 9?

CBSE Class 9 Biology, TissuesDownload now (a) Meristematic tissue- It consists of actively dividing cells. Meristematic tissues have three types. It is made of dead cells and there are no inter-cellular cells. • Complex permanent tissue- It is made up of more than one type of cells.

What is ground tissue in plants?

The ground tissue of plants includes all tissues that are neither dermal nor vascular. It can be divided into three types based on the nature of the cell walls. Parenchyma cells have thin primary walls and usually remain alive after they become mature. Sclerenchyma provides the main structural support to a plant.

What is lateral meristematic tissue?

Definition of lateral meristem. : a meristem (as the cambium and cork cambium) that is arranged parallel to the sides of an organ and that is responsible for increase in diameter of the organ — compare apical meristem, intercalary meristem.

What do you mean by permanent tissue?

Definition of permanent tissue. : plant tissue that has completed its growth and differentiation and is usually incapable of meristematic activity.

What is cambium cells?

Cambium, plural Cambiums, orCambia, in plants, layer of actively dividing cells between xylem (wood) and phloem (bast) tissues that is responsible for the secondary growth of stems and roots (secondary growth occurs after the first season and results in increase in thickness).

What is meristematic tissue where is it located?

A meristem is the tissue in most plants containing undifferentiated cells (meristematic cells), found in zones of the plant where growth can take place. Meristematic cells give rise to various organs of a plant and are responsible for growth.

What is plant tissue class 9?

Tissue is a group of cells similar in structure and function. Plant tissues are of two main types meristematic and permanent. Meristematic tissue is the dividing tissue present in the growing regions of the plant. Permanent tissues are derived from meristematic tissue once they lose the ability to divide.

Why is meristematic tissue so important to a plant?

Primary meristematic tissue helps the plant increase in length or vertical growth, meaning it helps the plant grow up toward the sun and down into the soil. Secondary meristematic tissue helps the plant increase the girth or lateral growth of its stems, branches, and roots.

What is the nervous tissue?

Nervous tissue is found in the brain, spinal cord, and nerves. It is responsible for coordinating and controlling many body activities. The cells in nervous tissue that generate and conduct impulses are called neurons or nerve cells. These cells have three principal parts: the dendrites, the cell body, and one axon.

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