If signs of low blood sugar do not improve after you have eaten a snack that has sugar: 1  Get a ride to the emergency room. DO NOT drive yourself. 2  Call a local emergency number (such as 911)
Pith, or medulla, is a tissue in the stems of vascular plants. Pith is composed of soft, spongy parenchyma cells, which store and transport nutrients throughout the plant. In eudicots, pith is located in the center of the stem.In monocots, it extends also into flowering stems and roots.The pith is encircled by a ring of xylem; the xylem, in turn, is encircled by a ring of phloem.ith is composed of soft, spongy parenchyma cells, which store and transport nutrients throughout the plant. In eudicots, pith is located in the center of the stem.
1 Parenchyma tissues are made of simple, thin-walled cells. 2  In a carrot, for example, the parenchyma cells become a storage unit called the cortex. 3  In leaves, a layer of parenchyma tissues under the epidermis is active in photosynthesis.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.