NEET BIOLOGY

Detailed explanation-1: -The xylem transports water and minerals from the roots up the plant stem and into the leaves.

Detailed explanation-2: -Xylem is unidirectional in terms of transportation, meaning the flow of water molecules takes place from the roots towards the top of the plant. Bidirectional movement means the movement of molecules in two opposite directions.

Detailed explanation-3: -Xylem is one of the two types of transport tissue in vascular plants, the other being phloem. The basic function of xylem is to transport water from roots to stems and leaves, but it also transports nutrients.

Detailed explanation-4: -One of the main difference between xylem and phloem is that xylem can conduct substances only in one direction, whereas, phloem can transport substances in both directions.

Detailed explanation-5: -Water and solutes are transported by the xylem from the roots to the leaves, and food is transported from the leaves to the rest of the plant by the phloem. The process by which water evaporates from the leaves and draws more water from the roots is called ‘transpiration’.