What is the destiny of primary xylem in a dicot root showing extensive secondary growth?

1. It is retained in the centre of the axis

2 It gets crushed

3. May or may not get crushed

4. It gets surrounded by primary phloem

Match the following

 A. A-iii, B-iv, C-i, D-ii

B. A-i, B-ii, C-iii, D-iv

C. A-iii, B-ii, C-iv, D-i

D. A-iii, B-ii, C-i, D-iv

Anatomically fairly old root is distinguished from dicotyledonous stem by

1. Position of Protoxylem

2. Absence of secondary xylem

3. Absence of secondary phloem

4. Presence of cortex

During the formation of leaves and elongation of stem, some cells left behind from shoot apical meristem constitute _____________

. Permanent plant tissue having all cells similar in structure and function are called

Permanent plant tissue having many different type of cells are called

Parenchymal cells have ________ walls and are made up of _____________.

Lignified cell wall is characteristic feature of

  _________ are commonly found in the fruit walls of nut.

Complex tissue in plants have