WebbQuestion 1: Movement of substances in xylem is unidirectional while in phloem it is bidirectional. Explain. Answer: Xylem transports water. Since transportation of water … WebbThese phloem vessels run from the leaves into every other part of the plant and are responsible for transporting dissolved organic solutes, such as sucrose and amino acids, from the sources to the sinks. Therefore, the vessel responsible for transporting sugars and amino acids is the phloem.

Phloem flow and sugar transport in - Wiley Online Library

While movement of water and minerals through the xylem is driven by negative pressures (tension) most of the time, movement through the phloem is driven by positive hydrostatic pressure. This process is termed translocation, and is accomplished by a process called phloem loading and unloading. Cells in a sugar source "load" a sieve-tube element by actively transporting solute molecules into it. This causes water to move into the sieve-tube element by osmosis, crea… WebbThe main function of phloem is to transport assimilates to sinks via translocation. Phloem contains four specialised cell types: sieve tube elements, companion cells, phloem fibres … how can i use chatgpt with edge

Spring bud growth depends on sugar delivery by xylem and water ...

Webb8 aug. 2015 · In this technique, the net flow through the xylem and phloem is monitored by following the propagation of a heat pulse along the pedicel, which travels in the dominant direction of sap flow. However, in many fruits, the xylem and phloem flows are in opposite directions in day time, and in the same direction only at night, this makes interpretation … Webb20 juli 1998 · phloem, plant vascular tissue that conducts foods made in the leaves during photosynthesis to all other parts of the plant. Phloem … WebbPhloem sap (pronounced /ˈfloʊɛm/) consists primarily of sugars, hormones, and mineral elements dissolved in water. It flows from where carbohydrates are produced or stored (sugar source) to where they are used (sugar sinks). What is mass flow system class 10? how can i use chat in bing