Question

Match the column:

List I	List II
A) Tracheids	I) Cells possess highly thickened walls with oblilateral central human
B) Vessels	II) Elongated tube like cells with thick lignified walls and tapering ends
C) Xylem parenchyma	III) Individual members are interconnected through perorations in their common walls
D) Xylem fibers	IV) Cells are living with thin cellulosic cell walls

• A. A-II B-III C-IV D-I
• B. A-II B-IV C-I D-III
• C. A-III B-II C-IV D-I
• D. A-II B-III C-I D-IV

Answer 1

Answer: (A)

• Tracheids are elongated, narrow tube-like cells with thick lignified walls with large cell cavity.
• They have pointed and tapering ends. They are dead empty cells with pits on their walls. They do not have perforations.
• Vessels are the tubular structure. The vessel members are connected by means of plates with pores and are known as perforation plates through which water moves upward.
• These are perforated cells. Xylem parenchyma cells are made up of thin cellulosic walls. Xylem is a complex tissue that has highly thickened walls and obliterated central lumen.
  So, the correct option is A.