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.
Older shoots and roots have normally gone through secondary growth. Their primary dermal tissues are replaced by a secondary dermal tissue, the bark. [ The bark is produced by the phellogen, a secondary cambium, and is interspersed with groups of cells called lenticels. Source: ].