I have no fricken idea!
Xylem tissue by ascent of sap
Transpiration creates a negative pressure that helps pull water upward in the xylem vessels, playing a major role in the ascent of sap in plants. As water evaporates from the leaf surface during transpiration, it creates tension that helps to draw water molecules up from the roots. This process, known as the cohesion-tension theory, is essential for the movement of water and nutrients throughout the plant.
transpiration and ascent of sap
Osmotic absorption of water by root hairs and ascent of sap.
Ascent of xylem water is also known as the ascent of sap as sap contains minerals dissolved in water. Ascent of sap is actually the movement of sap from the roots all the way to the leaves where it can be utilized in photosynthesis. There are two prposed theories so as to exlain the ascent of sap. One is the "Root Pressure Theory" which says that root exerts a pressure on the water to push it upwards by absorbing more from the soil. But this pressure works only for a few metres. The second theory is more acceptable; "The transpiration Pull". According to this one, when water is transpired through the leaves, the evaporating water molecules pull the ones after them with the help of the adhesive and cohesive forces. This helps in the ascent of water from the roots, all the way through the xylem, to the leaves.
Plant sap and tree sap originate in the roots and then climb to nourish the leaves. We take advantage of this ascension in maple trees. When their sap begins to ascend in the Spring, we tap the trees and collect and boil the sap in the production of maple syrup. Vet59Man
Mount Fuji was not "discovered" in the traditional sense as it has been a prominent feature in Japanese culture for centuries. However, the first recorded ascent of Mount Fuji was in 663 by an anonymous monk named Gyoki.
OpenIn day light , they are open, and perform the following three functions1. Transpiration2. Gaseous exchange3. Promotion of ascent of sap
When the stem of a herbaceous plant is cut and water or sap oozes out, it is due to the pressure within the plant's vascular system. The xylem and phloem tissues, which transport water and nutrients throughout the plant, are under pressure, and cutting the stem releases this pressure, causing the water or sap to flow out.
because they do not have vascular bundles i.e. xylem n phloem.. n vascular bundle is an imp source of ascent sap..
in day light , they are open, and perform the following three functions 1 Transpiration 2 Gaseous exchange 3 Promotion of ascent of sap***
The Ascent was created in 1977.