Phloem tissue in plants is RESPONSIBLE for the transportation of glucose from the leaves to all parts of the plant.Thus, the required option is Option 3: Glucose.Knowledge Bytes:→ Phloem - the living tissue✳ Phloem is a complex permanent tissue made up of many types of cells.✳ Some basic components of phloem are sieve tubes, companion cells, phloem fibres and the phloem PARENCHYMA. ✳ Phloem is a living tissue.✳ It can conduct the prepared glucose in both upward and DOWNWARD direction.✳ The main function of the phloem is to transport prepared glucose [the product of photosynthesis] as food for all parts of the plant.✳ Except for phloem fibres,  all phloem cells are living cells.→ Xylem - the dead tissue✳ Xylem is a complex permanent tissue made up of many types of cells.✳ Some basic components of xylem are tracheids, VESSELS,  xylem parenchyma and xylem  fibres.✳ In these, tracheids and vessels are responsible for transportation of raw materials such as water, minerals and salts from the root nodules to the leaves for photosynthesis.✳ Most of the components of xylem are dead.✳ Xylem only conducts the sap in the upward direction through the process of transpiration. This ascend is KNOWN as ascent of sap.