Active transport of sucrose into sieve element is a step commonly called:
(a) Phloem loading
(b) Unloading
(c) Diffusion
(d) Osmosis
Answers
Answer:
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.
Answer:
Active transport of sucrose into sieve element is a step commonly called Phloem loading.
Explanation:
Long-distance nutrition transmission begins with phloem loading. Through this process, solute is actively concentrated in mature leaves, which are the source organs' source organs, in the phloem, creating hydrostatic pressure.
Only by carefully examining the pathways by which sugar moves from mesophyll cells to sieve elements can phloem loading be understood.
Given the complexity of the paths, the close proximity of the locations, and the fact that the transport chemicals are soluble in the common solvents employed to prepare tissues for microscopy, mapping these routes and figuring out the mode of transport at various interfaces is tough. The accumulation process demands metabolic energy since it often occurs against a concentration gradient.
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