Cork cells (bark) protect the plant against physical damage and water loss; they contain a waxy substance known as suberin that prevents water from penetrating the tissue. The literature is fraught with synonyms referring (a) to the meristem producing the secondary vascular tissues, e.g. ... * In plants, primary and secondary meristematic cells contribute to primary and secondary growth of the plant. • Cell division in the lateral meristems produces secondary dermal tissues which are thicker and tougher than the epidermis it replaces. vascular cambium and cork cambium (phellogen). ` Q 26. The growth of the lateral meristems, which includes the vascular cambium and the cork cambium (in woody plants), increases the thickness of the stem during secondary growth. See more. Secondary growth definition, an increase in the thickness of the shoots and roots of a vascular plant as a result of the formation of new cells in the cambium. Secondary (Lateral) Growth. Secondary growth is characterized by an increase in thickness or girth of the plant, and is caused by cell division in the lateral meristem. Write four characteristics of meristematic tissue. The lateral meristematic tissue occurs only in trees, shrubs, and some grasses. B. There are two types of meristem in the plant stem: apical and lateral. Or An increase in plant growth due to the activity of vascular cambium is called secondary growth. However, secondary Grier increases thickness or girth of the plant by the formation of secondary tissues. Concept 14: Lateral Meristems In woody plants, secondary growth of stems and roots occurs through the activity of two lateral meristems: the vascular cambium and the cork cambium. As a result the plant grows in length. This lesson includes: A review of key components in the shoot system Remember that all plant stem growth occurs at the meristems of the shoot system because this is where cell division occurs. Secondary tissues: Tissues generated from the growth of a cambium. •Lateral meristems = Cylinders of dividing cells extending along the lengths of roots and shoots. What does vascular cambium do? The two important ones for secondary growth are the vascular cambium and the cork cambium. It is so called because it is responsible for secondary growth. Secondary (2º) Growth: mitotic growth from a lateral meristem (e.g. They can be of primary or secondary origin. Figure 4 shows the areas of primary and secondary growth in a plant. This type of growth is known as secondary growth because it is growth around an already established stem. Learn more about plant growth in the interactive lesson, Lateral Meristem & Secondary Shoot System Growth. synonyms re ferring (a) t o the meristem pr oducing th e secondary va scular tiss ues, e.g. Cambium: A lateral meristem constituting a sheet of cells. Use information in the graphic to answer the questions below it. Secondary Meristem Cells. 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