Food is transport through the phleom in the plant from leaf to other part of the plant and from storage organ to the needed part of the plant

In plants, food produced during photosynthesis is transported through the phloem, a vascular tissue. This process is called translocation and involves moving sugars (like sucrose) from source tissues (like leaves) to sink tissues (like roots, fruits, or developing tissues). The movement is facilitated by energy from ATP, which increases osmotic pressure, drawing water into the phloem and creating a pressure gradient that pushes the food solution through the plant.
Here’s a more detailed explanation:
Phloem:
The phloem is a complex tissue composed of sieve tubes and companion cells. Sieve tubes are elongated cells that form a continuous pathway for food transport, while companion cells provide support and regulate sieve tube function.
Sucrose Transport:
The food, primarily in the form of sucrose, is loaded into the sieve tubes of the phloem by using energy from ATP.
Osmosis and Pressure:
As sucrose enters the sieve tubes, water moves into them by osmosis, increasing the pressure within the phloem.
Pressure Gradient:
The high pressure in the source tissue pushes the food solution (sucrose) through the phloem to areas of lower pressure, which are the sink tissues.
Bidirectional Transport:
The phloem can transport food both upwards (from leaves to roots) and downwards (from fruits or flowers to roots) depending on the plant’s needs.

Phloem also known as food transportation in plants is from one place to another in a process known as translocation.
– This is made possible by what is termed the pressure-flow theory. Sugars mainly sucrose are produced at the sites of their Photosynthesis (source) and are made to move into the phloem.
– To achieve this, a high solute in the phloem should exist. Thus, water will move into the phloem from the xylem directly surrounding it by osmotic pressure. This pressure difference always moves the sugar solution towards the plus (roots, fruits, and storage organs).
– Sugars are removed for consumption or storage at the plus and water also leaves the phloem which reinforces the flow progression.