Question

In flowering plants , water is conducted through -------- .
A.Vessels
B.Tracheids
C.Cork
D.Both A and B

Answer 1

Hint: In plants two types of tissues are present. Permanent tissue and meristematic tissue. Permanent tissue is of two types , simple and complex tissue. The complex tissues are made up of more than one type of cells and this works together as a unit. Xylem and phloem considered the complex tissues in plants.

Complete answer:
1.Xylem functions as a conducting tissue for water and minerals from roots to stem and leaves. It also provides mechanical strength to the plant parts.
2.Xylem is composed of four different kinds of elements , which are known as tracheids and vessels , xylem fibres and xylem parenchyma . Gymnosperms lack vessels in their xylem as they are not that most developed .
3.Tracheids are elongated tube-like cells with thick and lignified walls with tapering ends . The inner layers of the cell walls have thickenings which vary in form . Tracheids are dead cells as protoplasm is absent.
4.Vessel is a long cylindrical tube like structure which is made up of many cells called vessel membranes each with lignified walls and a large central cavity. Vessel cells also do not contain protoplasm . Vessel membranes are interconnected through perforations in their common walls of cells . The presence of vessels is the characteristic feature of angiosperm .
5.Xylem conduction of water and tracheids and vessels are the main body which conduct water . Since walls of tracheids and vessels are lignified and it provides tensile strength.

Hence the correct answer is OPTION(D)

Note: In xylem the flow of water is unidirectional from root to the plant .