Question

Bulk flow of substances over the longer distances through the vascular tissue is called

• A. simple diffusion
• B. facilitated diffusion
• C. active transport
• D. translocation

Answer 1

Answer: (D)

The movement of organic food or solute in soluble form, from one organ to another organ is called translocation of organic solutes. The process of translocation requires expenditure of metabolic energy and the solute moves at the rate of $100cm/hr$. The translocation of solutes occurs in a mass along with cell sap through the sieve tubes from a region of higher turgor pressure to low turgor pressure (i.e, along a turgor pressure gradient).