Question

In plants the accepted mechanism for the translocation of sugars from source to sink
1involves the modest push by root pressure
2involves the transport according to pressure potential gradient
3is completely based upon transpiration pull
4not requires metabolic energy​

Answer 1

Explanation:

the bulk movement of substances through conducting vascular tissues of plants are called as translocation the vascular tissues means is xylem and phloem . the upward movement of water occurs through xylem and thyroids it is under influence of pulling force produced due to transpiration what is called as transpiration pull . phloem transport food mainly in the form of sucrose from source to singer sucrose and think maybe reversal based on the season of the plants requirement as source sink relationship variable and direction the movement of phloem is bidirectional in contrast to xylem in which it is unidirectional phloem SAP mainly consists of water Anshu Cruise but other Sugars amino acids and hormones are also translocated

Answer 2

In plants the accepted mechanism for the translocation of sugars from source to sink:

2. Involves the transport according to pressure potential gradient.

• In plants, photosynthesis occurs in leaves and the glucose produced is transported to other parts of the plant as sucrose.
• A very effective pressure gradient mechanism is used to transport food to all the cells that need it.
• As there are pressure changes in the phloem tissue that transports food, water from the adjacent xylem moves in and travels to the tissue that require food.
• Once, the food moves to the tissue, water moves out of phloem back to the xylem and this process continues.