don't even know
Cells of the pith of a stem generally have thick cell wall and large vacuoles. Likewise, cells of the cortex in the older parts have thick cell wall and large vacuoles.
The pith
The center of plant stem that can store food is called the pith. The pith has a spongy texture. The pith in a tree is called the trunk.
Its part of a plant cell, a tube that carries energy.-----------------A Xylem cell is a plant cell. The xylem is the woody part of the tree. It is all of the cells between the pith in the center out to the cambium. The xylem consists of the sapwood and the heartwood. There is no one cell called a "xylem cell". Any cell in the xylem portion of the tree could be called a xylem cell.The vessels and/or tracheids in the outer few growth rings in the sapwood carries sap or water (with dissolved minerals) up to the leaves. The inner bark cells carry the food made by the leaves down the tree for use and for storage. The ray cells transport the food radially into the tree for growth. Also the rays cells can transport stored food radially outward in times of shortages or special needs. (like repairing damage by weather or disease or insects or animals, etc.)Phloem
A person will not know which of the following illustrations of electrically charged pith ball shows the correct position of the pith balls without seeing the illustrations. It is important to include the illustrations as well.
The pith cell.
Cells of the pith of a stem generally have thick cell wall and large vacuoles. Likewise, cells of the cortex in the older parts have thick cell wall and large vacuoles.
Parenchyma cells.
PITH
The pith
parenchymatous tissue that extends between the vascular bundles of a stem or root.Connecting the pith to the cortex by living cells so that all the vital activities are properly cordinated.
the pith is the middle of a tree
Parenchyma cells are defined as simple plant tissue, composed of thin-walled cells and forming the greater part of leaves, roots, the pulp of fruit, and the pith of stems. They are always alive so their life span is the life span of the leaf which they are a part of.
The pith of a tree is formed during the first year of growth and becomes a storage area for impurities that are deposited from the active xylem during the growth of the tree. The pith or "heart wood" is more resistant to rot and was used for the base of log cabins before foundations. The center of the tree has also been sought ofter for fence posts due to the resistance to rot.
The pith of the tree is formed from the procambium, usually during the first year of growth. The heartwood is not a storage area for "impurities". The heartwood is between the pith and the sapwood. It acts as mechanical support for the tree and contains "extractives" (not impurities) that evolve, over eons, to protect the tree from disease, insects, fungi, fire, and other environmental competitors.Pith isn't even considered as wood. It's usually a spongy type of material consisting of parenchymous cells. Heartwood is "dead" and the sapwood, cambium, and inner bark (phloem...HEY, that's my username!) are living tissues (contain cytoplasm)
Phloem is actually composed of still-living cells that transport sap. Perhaps you are asking about xylem which is composed primarily of dead cells.
Pith is weaker than the rest of a tree because it comes from the young flexible sapling of an adolescent tree. If the Pith is not removed a builder would have to assume that all the lumber was as weak as the pith, and they would end up using more lumber than necessary to carry the same load.