A device that produces light for a fiber optic lighting system, which also is made up of fiber optic fibers and sometimes fixtures used at the ends of the fibers to direct the light in a specified manner. The light source used in an illuminator is usually an MR halogen lamp, an MR metal halide lamp, or an LED lamp.
There are two types of vascular tissue: xylem, which moves water, and phloem, which moves food. These structures are arranged differently in monocots and dicots. In monocots, which are flowering plants with only one seed leaf, the xylem and phloem are found in paired bundles throughout the stem.
The fundamental types of tissues in animals are epithelial, nerve, connective, muscle, and vascular tissues whereas in plants, they are the meristematic (apical meristem and cambium), protective (epidermis and cork), fundamental (parenchyma, collenchyma and sclerenchyma) and vascular (xylem and phloem) tissues.he fundamental types of tissues in animals are epithelial, nerve, connective, muscle, and vascular tissues whereas in plants, they are the meristematic (apical meristem and cambium), protective (epidermis and cork), fundamental (parenchyma, collenchyma and sclerenchyma) and vascular (xylem and phloem) tissues.