1 A day care is a business, and as a business owner you'll be in charge of employee management, bookkeeping, marketing, and other responsibilities that come with running a small business in addition to providing childcare.
Guard cells, chloroplast-containing cells scattered throughout the epidermal layers regulate the opening and closing of the stoma. Periderm tissue forms the outer bark of woody plants and will be discussed later. Observe the prepared slide of a leaf epidermis and compare with the micrograph below.
Most plants grow from the tips of branches and roots where apical meristems produce new cells. As a result, in all buds, at the ends of all branch tips and on root tips, apical meristems are found. Apical meristems produce new cells that differentiate into three distinct embryonic tissues.These are the protoderm, ground meristem, and procambium. In the diagram, you can see protoderm will form the epidermal tissues.Ground meristem is the embryonic tissue that forms cells of the cortex and pith. Procambium forms the vascular tissues, xylem and phloem. Apical meristems contribute to initial plant growth called primary growth. second ring of meristematic tissue forms just below the epidermis in woody plants to produce bark. This is the cork cambium. The cork cambium and vascular cambium contribute to subsequent or secondary growth typically found only in woody plants. Now, roll over the apical meristem on the diagram..