Do munch's hypothesis of bulk transpot in phloem explains bi directional transport , if so how??
Dear student,
Yes, Munch's Hypothesis of bulk transport explain the bidirectional transport in the phloem.
The Mass Flow Hypothesis was proposed by Ernst Munch.
A high concentration of organic substances such as sugar inside cells of the phloem at a source, such as a leaf, creates a diffusion gradient that draws water into the cells from the adjacent xylem. This creates hydrostatic pressure in the phloem.
Movement of phloem sap occurs by bulk flow (mass flow) from sugar sources to sugar sinks.
The movement in phloem is bidirectional, whereas, in xylem cells, it is unidirectional (upward).
Hope this information will clear your doubts about topic.
If you have any more doubts just ask here on the forum and our experts will try to help you out as soon as possible.
Regards
Yes, Munch's Hypothesis of bulk transport explain the bidirectional transport in the phloem.
The Mass Flow Hypothesis was proposed by Ernst Munch.
A high concentration of organic substances such as sugar inside cells of the phloem at a source, such as a leaf, creates a diffusion gradient that draws water into the cells from the adjacent xylem. This creates hydrostatic pressure in the phloem.
Movement of phloem sap occurs by bulk flow (mass flow) from sugar sources to sugar sinks.
The movement in phloem is bidirectional, whereas, in xylem cells, it is unidirectional (upward).
Hope this information will clear your doubts about topic.
If you have any more doubts just ask here on the forum and our experts will try to help you out as soon as possible.
Regards