Explain how Translocation of Sucrose Occurs in the Phloem as Proposed by the Mass Flow Hypothesis
Translocation involves the transport of organic materials produced through photosynthesis, such as sucrose, from the leaves to other parts of the plants where they are utilized. It occurs in the phloem sieve tube between the source end(near the leaves); where sucrose is loaded due to the process of photosynthesis by the palisade and spongy mesophyll cells to the sink end(near the end where sucrose is unloaded for respiration and storage purposes).
At the source end, companion cells actively pump Hydrogen ions out into mesophyll cells, creating a proton gradient.…
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