Some plant tissues are endowed with specialized cells and intercellular substances, whose function is to provide resistance structural to the body of plants, acting on skeletal support, there are two main types: the collenchyma and the sclerenchyma.
The colenchyma, in addition to support, also allows the plant to grow, as it consists of elongated and juxtaposed living cells that are not lignified, but with considerable deposition of cellulose. Normally seen in the stem, its cellular organization is evidenced by forming cylindrical bundles arranged in longitudinal bands just below the epidermis.
- Average size of the colenchyma cells → 1.0 millimeters in length by approximately 40 micrometers in diameter.
The sclerenchyma, on the other hand, is formed by dead cells that are also elongated, however, impregnated with lignin. In this tissue, cells of different types (scleridae and fibers) organize themselves forming longitudinal ligaments contained in the innermost region of the stem.
- Average size of the sclerenchyma cells → 1.5mm long by 50 micrometers in diameter.
By Krukemberghe Fonseca
Graduated in Biology
Brazil School Team
botany - Biology - Brazil School
Source: Brazil School - https://brasilescola.uol.com.br/biologia/tecidos-sustentacao-vegetal.htm
