undifferentiated parenchyma cells
(from inside to out) Heartwood, Xylem, cambium, phloem, bark/outside layer
Secondary growth in cortical region forms secondary cortex inside and periderm outside the cortical cambium
Herbaceous stems lack woody tissue and growth rings unlike woody xylem. Wood is a composite of cellulose fibers which require the the process of phloem in the bark to contain nutrients unlike herbaceous stems that rely on xylem that contains vessel and vascular elements.
In the stele inside endodermis
yes, they are non-vascular because they have no vascular tissue inside of them!
vascular cambium
vascular cambium
vascular cambium
vascular cambium
vascular cambium
vascular cambium
vascular cambium
vascular cambium
yes it does the pourpose of the cambium is to thicken the plant . I'm not sure if im right, but i think your wrong. Only woody plants have a vascular cambuim. One of the most common woody plant is a tree. If you are talking about a vascular cambium inside a tree, then no, the vascular cambuim does not expand the stem. What it does is make a second layer of bark for the tree in the comming spring.
Trees have two types of growth: primary growth and secondary growth. · Primary growth occurs at the tips of roots and stems and results in their growing taller or longer. · Secondary growth takes place in the vascular cambium and the cork cambium and results in an increase in the diameter of the stem or trunk of the tree. Cambium lies between the old wood and the bark of the tree. The vascular cambium is a thin layer cells that produces conducting cells - xylem and phloem. · The phloem is the outer layer, and is sometimes referred to as the inner bark. It is a food conducting tissue. The xylem is located toward the inside of the cambium layer. · The xylem is the vascular tissue through which most of the water and minerals of the tree are conducted. More secondary xylem (added toward the inside of the cambium layer) than secondary phloem (added toward the outside of the cambium layer) is produced by the cambium. The definition of wood is secondary xylem, reflected by the origin of the term 'xylem', the Greek word xylon, for wood. Another layer, the cork cambium, contributes to the expanding girth of a tree. The cork cambium is a thin layer cells that ultimately produces the bark of the tree. The bark is composed of several types of tissue produced (both toward the inside and the outside of the tree) by the cork cambium layer.
(from inside to out) Heartwood, Xylem, cambium, phloem, bark/outside layer
The Vascular Cambium adds cells on both sides, producing secondary Xylem toward the inside of the stem This is true for most vascular plants except for the order Myrtales that has phloem on both sides of the xylem. The cambium structure is quite different in this order.