Collenchyma, part of the ground tissue, is a simple living tissue found in plants. The cell wall of collenchyma tissue cells is thickened at corner due to higher deposition of cellulose, pectin and hemicellulose. The cells are generally spherical or polygonal in shape. This tissue provides mechanical support to the young stem and leaf. The outermost covering of the whole plant body forms the epidermal tissue system that includes the epidermal cells and appendages with stomata. This system basically provides protection to the main plant body. The outermost layer of primary plant body called as epidermis have elongated compactly arranged cells. Stomata structures present in the epidermis help in regulating transpiration and gas exchange. These stomata are made of two guard cells each that encloses the pore.

Meristem are a type of tissue found in such plants which can divide indefinitely. These are generally considered undifferentiated as they can give develop into all other tissues and organs of the plant. The meristematic tissues that appear early in plant life and help in formation of the plant body is called primary meristem. The apical and intercalary meristem are included in it. Meristematic tissue occurring between the mature regions of root and shoots of angiosperms are called secondary meristem.

Parenchyma is a type of simple permanent tissues forming a major component of the tissues of plant. These cells are in various shapes like oval, round, polygonal etc. with a thin cell wall made of cellulose. These cells perform functions like storage, photosynthesis, secretion.

The simple permanent tissue consisting of dead cells without protoplast is called sclerenchyma. These cells are long and narrow with lignified cell wall. The thick-walled, elongated pointed cells form the sclerenchyma fibres and the spherical, oval shaped cell with highly thickened cell wall and narrow cavity form the sclerenchyma sclereids.