The bark
Wood is primarily composed of secondary xylem, while phloem is the vascular tissue responsible for transporting nutrients. Trees produce primary phloem during their early growth stages, but as they mature, they develop secondary phloem through the activity of the vascular cambium. Therefore, while wood itself is not phloem, trees have both primary and secondary phloem for nutrient transport.
Xylem
No, the growth rings of dicot and gymnosperm trees are primarily composed of xylem, not phloem. Growth rings form due to variations in the density and size of xylem cells produced during different seasons. Phloem, which transports nutrients, is found on the outer part of the tree but does not contribute to the formation of growth rings.
It depends on where the fire occurs, and what kind of habitat is present. In general, most often, grasses and forbs will become reestablished first, followed within a couple years by the return of sapling trees and woody plants. Over many decades, fast-growing trees will become reestablished first, then eventually give way to old-growth forest types of trees.
diffusion .pull of the vascular tissues the phloem and xylem.hope woudn't help.
Wood is primarily composed of secondary xylem, while phloem is the vascular tissue responsible for transporting nutrients. Trees produce primary phloem during their early growth stages, but as they mature, they develop secondary phloem through the activity of the vascular cambium. Therefore, while wood itself is not phloem, trees have both primary and secondary phloem for nutrient transport.
Leaves are designed to last only a short time so a secondary xylem and phloem supply is not needed. These chemicals offer a strong support system that is not needed in the leaves, just the trees.
The vascular cambium undergoes active cell division to produce secondary xylem (wood) towards the inside of the stem and secondary phloem towards the outside. This results in the growth of woody tissues in trees and other woody plants.
If a tornado uproots most of the trees in an area, then secondary succession will occur. In secondary succession, the vegetation itself or much of it has been destroyed, but the soil and seeds remain in place. Plants will grow from these seeds. Eventually new trees will grow and, after a few decades, the area will have returned to normal.
Pine trees are vascular plants because these have well defined xylem and phloem tissues.
Xylem
phloem
No, the growth rings of dicot and gymnosperm trees are primarily composed of xylem, not phloem. Growth rings form due to variations in the density and size of xylem cells produced during different seasons. Phloem, which transports nutrients, is found on the outer part of the tree but does not contribute to the formation of growth rings.
i have never known of using frogs as a fuel or some similar purpose
because trees have areas that transport nurtients and water from the soil below it. The phloem and xylem contribute to the spread of these essential nutrients.
It depends on where the fire occurs, and what kind of habitat is present. In general, most often, grasses and forbs will become reestablished first, followed within a couple years by the return of sapling trees and woody plants. Over many decades, fast-growing trees will become reestablished first, then eventually give way to old-growth forest types of trees.
The main direct products of trees are fruit and wood. There are many secondary benefits also.