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.
Phloem tissue is surrounded by strong cells called fibers, which are a type of sclerenchyma, and parenchyma cells that form the cortex. Outside the phloem ring is the bark, a ring of boxy, waterproof cells that help protect the stem.