Question

In spring, sugar solution rises quickly up through the phloem in plant stems. Give a reason for this​

Answer 1

Answer:

The cotransport of a proton with sucrose allows movement of sucrose against its concentration gradient into the companion cells. ... This movement of water into the sieve tube cells cause Ψp to increase, increasing both the turgor pressure in the phloem and the total water potential in the phloem at the source.

Explanation:

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Answer 2

Answer:

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Explanation:

The cotransport of a proton with sucrose allows movement of sucrose against its concentration gradient into the companion cells. This movement of water into the sieve tube cells cause level of sugar solution to increase, increasing both the turgor pressure in the phloem and the total water potential in the phloem at the source.