Safety is a basic need of people. Studies show that people who. are continually subjected to stressful situations are more. susceptible to psychosomatic illnesses. Even though it is. possible to adapt to extreme situations over the long term, they. will place a great strain on the individual.
As dendrochronologists, we are more interested in the fusiform initials. The fusiform initials produce secondary xylem and secondary phloem (the xylem and phloem produced during secondary growth). When we study wood or tree rings, we are looking at secondary xylem.As the fusiform initials divide, they produce secondary xylem towards the inside of the cell and secondary phloem towards the outside. Therefore, the vascular cambium (where we find the fusiform initials) is considered to be bifacial.s dendrochronologists, we are more interested in the fusiform initials. The fusiform initials produce secondary xylem and secondary phloem (the xylem and phloem produced during secondary growth). When we study wood or tree rings, we are looking at secondary xylem.
Xylem and phloem tissues that differentiate from procambial tissue are called primary xylem and primary phloem. In plants with secondary growth, vascular tissue differentiates from a lateral meristem, the vascular cambium, producing secondary xylem and secondary phloem. Secondary xylem is a familiar product: wood.ylem: The Water-Conducting Vascular Tissue. Xylem is a complex tissue composed of several different cell types. This tissue includes parenchyma cells, fibers, and two cell types specializing in water and mineral transport: tracheids and vessel members.