n a child who spends most of his time in the streets especially in slum areas. a homeless girl who roams the streets. (sometimes offensive) a homeless boy who has been abandoned and roams the streets. poor and often mischievous city child.
Like other organisms, plant cells are grouped together into various tissues. These tissues can be simple, consisting of a single cell type, or complex, consisting of more than one cell type. Above and beyond tissues, plants also have a higher level of structure called plant tissue systems.There are three types of tissue systems: dermal tissue, vascular tissue, and ground tissue systems. The dermal tissue system consists of the epidermis and the periderm.The epidermis is generally a single layer of closely packed cells.ylem and phloem throughout the plant make up the vascular tissue system. They allow water and other nutrients to be transported throughout the plant. Xylem is consists of two types of cells known as tracheids and vessel elements.
1 Tissues â Groups of cells that are similar in appearance and function, for example: 2  Epidermis is the single exterior layer that protects the stems, leaves, flowers, and roots. 3  The outside surface of the epidermis tissue is usually covered with a waxy substance called cutin, which reduces water loss.n reviewing plant physiology, plant cells are grouped into tissues based on similar characteristics, then into five distinct structures (organs). 1  Cells â individual building blocks for life processes and growth.