The driving force for the translocation of organic solutes through phloem is __ gradient

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Solution

Due to the presence of sucrose in the sieve tube cells water enters into sieve tube cells and a hydrostatic pressure builds up. At the sink osmotic pressure is reduced as sugars and removed. Hence water flows out of phloem and into the sink, reducing the hydrostatic pressure in the phloem vessel. This gradient in the hydrostatic pressure facilitates the mass movement in the phloem.

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Similar questions

Identify the correct set of statements related to the movement of substances through vascular tissues.

I. Xylem mainly translocates water, minerals salts and also organic solutes.

II. Phloem mainly translocates a variety of organic solutes and also inorganic solutes.

III. Xylem transports substances from roots to aerial parts of the plants.

IV. Phloem transports substances bidirectionally.

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