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  • The loading at the source leads to accumulation of sugar and other osmotically active solutes in the sieve tube elements. This causes:  <div class='qna

The loading at the source leads to accumulation of sugar and other osmotically active solutes in the sieve tube elements. This causes:

 

Option: 1

Increase in water potential


Option: 2

Decrease in water potential


Option: 3

First increase then decreases the water potential


Option: 4

First decreases then increases the water potential.


Answers (1)

best_answer

The presence of high concentrations of sugar in the sieve tube elements drastically reduces Ψw, which causes water to move by osmosis from xylem into the phloem cells. Hence, the correct answer is option 2.

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Gunjita

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