Question

write function of each component of xylem and phloem

Answer 1

Xylem contains four types of cells, such as xylem parenchyma, xylem fibres, tracheids and vessels.

(1) Xylem parenchyma: store metabolites produced from metabolism of plant. Also help in short distance transport.(2) Xylem fibres: provide mechanical support. The walls of xylem fibres are lignified and protoplasm is absent.(3) Xylem tracheids: transport of water and mineral salts.


Phloem also contains four types of cells such as phloem parenchyma, phloem fibres, companion cells and sieve tubes. 

(1) Phloem parenchyma: transport of nutrients and storage of organic food.(2) Phloem fibres: they are non-living component of phloem. They provide mechanical support.(3) Companion cells: provide ATP and nutrients to carry out cellular functions..

VESSEL TUBES

1 It is a long distance channel for water transport.

2. A vessel is made up of a large number of dead cells.

3. The wall is thick.

4. The wall possesses pits and other types of secondary thickenings.

5. The wall is lignified.

SIEVE TUBES

1.Sieve tube is a long distance channel for transport of organic nutrients.

2. It is made up of number of living cells.

3. The wall is thin.

4. Secondary thickenings are absent. Plasmodesmata occur instead.

5. Lignification is absent.

hope it helps u...

Answer 2

xylem and phloem are transport the water,and food for part of plants